Attachment 345935 Details for Bug 187841 – Patch

[patch] Patch

bug-187841-20180727123528.patch (text/plain), 297.38 KB, created by Said Abou-Hallawa on 2018-07-27 12:35:31 PDT

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Creator: Said Abou-Hallawa

Created: 2018-07-27 12:35:31 PDT

Size: 297.38 KB

patch

obsolete

>Subversion Revision: 234227
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index e16c2a630fba747f0f52ebd07183f6e7cca57d3f..3149bc6d830f748c14c2b92307b9f14c22c584c7 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,701 @@
>+2018-07-27  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Renderer of large image has to be marked as waitingForAsyncDecoding when it is recorded into a DisplayList
>+        https://bugs.webkit.org/show_bug.cgi?id=187841
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        This should fix rendering the bitmap images through DisplayLists when they
>+        are asynchronously decoded.
>+
>+        * html/ImageBitmap.cpp:
>+        * loader/cache/CachedImage.cpp:
>+        (WebCore::CachedImage::CachedImageObserver::addClientWaitingForAsyncDecoding):
>+        * loader/cache/CachedImage.h:
>+        * platform/graphics/GraphicsContext.cpp:
>+        (WebCore::GraphicsContext::drawImage):
>+        (WebCore::GraphicsContext::drawTiledImage):
>+        * platform/graphics/GraphicsContext.h:
>+        (WebCore::ImagePaintingOptions::ImagePaintingOptions):
>+        * platform/graphics/ImageObserver.h:
>+        * rendering/RenderBoxModelObject.cpp:
>+        (WebCore::RenderBoxModelObject::paintFillLayerExtended):
>+        * rendering/RenderImage.cpp:
>+        (WebCore::RenderImage::paintIntoRect):
>+
>+2018-07-25  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        After replaying a DisplayList, the state of the drawing context has to be restored
>+        https://bugs.webkit.org/show_bug.cgi?id=187980
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        A problem could happen if we are replaying multiple display lists to the
>+        same drawing context. When replaying its DisplayListItems, the DisplayList
>+        expects to find the state of the drawing context to be exactly the same
>+        it was at the time it was recorded.
>+
>+        * platform/graphics/displaylists/DisplayListReplayer.cpp:
>+        (WebCore::DisplayList::Replayer::replay):
>+
>+2018-07-25  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        After replaying a DisplayList, the state of the drawing context has to be restored
>+        https://bugs.webkit.org/show_bug.cgi?id=187980
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        A problem could happen if we are replaying multiple display lists to the
>+        same drawing context. When replaying its DisplayListItems, the DisplayList
>+        expects to find the state of the drawing context to be exactly the same
>+        it was at the time it was recorded.
>+
>+        * platform/graphics/displaylists/DisplayListReplayer.cpp:
>+        (WebCore::DisplayList::Replayer::replay):
>+
>+2018-07-23  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        DisplayList::DrawRect() should take half of the border thickness into account when calculating the localBounds.
>+        https://bugs.webkit.org/show_bug.cgi?id=187921
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Half of the border thickness is drawn outside the rectangle area. We need
>+        to inflate the localBounds by this amount. Remember localBounds is used
>+        in calculating the DisplayListItem extent which is used to decide whether
>+        DisplayListItem intersects the clipping or not. And if they don't intersect
>+        the DisplayListItem will not be drawn.
>+
>+        * platform/graphics/displaylists/DisplayListItems.h:
>+        * platform/graphics/displaylists/DisplayListReplayer.cpp: Deleted.
>+        (WebCore::DisplayList::Replayer::~Replayer):
>+        * platform/graphics/displaylists/DisplayListReplayer.h:
>+
>+2018-07-22  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Introduce RenderLayerContext
>+        https://bugs.webkit.org/show_bug.cgi?id=187898
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        This class will control whether the drawing context is a display list or
>+        not. It will manage creating the display lists and replaying them in the
>+        correct order.
>+
>+        * WebCore.xcodeproj/project.pbxproj:
>+        * rendering/PaintPhase.h:
>+        * rendering/RenderLayer.cpp:
>+        (WebCore::RenderLayer::paintLayerContents):
>+        (WebCore::RenderLayer::paintCompositedPhasesMultiplePasses):
>+        * rendering/RenderLayer.h:
>+        * rendering/RenderLayerContext.h: Added.
>+        (WebCore::RenderLayerContext::RenderLayerContext):
>+        (WebCore::RenderLayerContext::graphicsContext):
>+        (WebCore::RenderLayerDisplayListContext::RenderLayerDisplayListContext):
>+        (WebCore::RenderLayerDisplayListContext::replay):
>+        (WebCore::RenderLayerDisplayListContext::paintOrders):
>+        (WebCore::RenderLayerDisplayListContext::paintOrdersSize):
>+        (WebCore::RenderLayerDisplayListContext::paintOrderIndex):
>+        (WebCore::RenderLayerDisplayListContext::graphicsContext):
>+
>+2018-07-20  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Refactor the RenderLayer composited phases painting into a separate function
>+        https://bugs.webkit.org/show_bug.cgi?id=187865
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        The plan is to make RenderLayer::paintLayerContents() choose between different
>+        implementations for painting the composited phases. The first implementation
>+        is the existing one: multiple passes into the drawing GraphicsContext. In
>+        the following patch, a new implementation will be introduced: multiple passes
>+        into multiple DisplayLists. Then this implementation will be changed to be:
>+        single pass into multiple DisplayLists.
>+
>+        * rendering/RenderLayer.cpp:
>+        (WebCore::RenderLayer::RenderLayer):
>+        (WebCore::RenderLayer::beginTransparencyLayers):
>+        (WebCore::RenderLayer::endTransparencyLayers):
>+        (WebCore::RenderLayer::paintLayerContents):
>+        (WebCore::RenderLayer::paintCompositedPhasesMultiplePasses):
>+        * rendering/RenderLayer.h:
>+        * rendering/RenderLayerBacking.cpp:
>+        (WebCore::RenderLayerBacking::paintIntoLayer):
>+
>+2018-07-20  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Enable DisplayList recording for ShareableBitmap::paint()
>+        https://bugs.webkit.org/show_bug.cgi?id=187841
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        This drawing function should be record-able.
>+
>+        * platform/graphics/GraphicsContext.h:
>+        * platform/graphics/GraphicsContextImpl.h:
>+        * platform/graphics/Icon.h:
>+        * platform/graphics/cairo/GraphicsContextCairo.cpp:
>+        (WebCore::GraphicsContext::drawNativeScaledImage):
>+        * platform/graphics/cairo/GraphicsContextImplCairo.cpp:
>+        (WebCore::GraphicsContextImplCairo::drawNativeScaledImage):
>+        * platform/graphics/cairo/GraphicsContextImplCairo.h:
>+        * platform/graphics/cg/GraphicsContextCG.cpp:
>+        (WebCore::GraphicsContext::drawNativeScaledImage):
>+        * platform/graphics/displaylists/DisplayListItems.cpp:
>+        * platform/graphics/displaylists/DisplayListItems.h:
>+        * platform/graphics/displaylists/DisplayListRecorder.cpp:
>+        (WebCore::DisplayList::Recorder::drawNativeScaledImage):
>+        * platform/graphics/displaylists/DisplayListRecorder.h:
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp:
>+        (Nicosia::CairoOperationRecorder::drawNativeScaledImage):
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h:
>+
>+2018-07-18  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Clipping operations should be platform-independent GraphicsContext functions
>+        https://bugs.webkit.org/show_bug.cgi?id=187795
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Recording to DisplayList list happens in the platform-independent APIs.
>+        The actual clipping will be done in the platform-dependent sources.
>+
>+        * html/canvas/CanvasRenderingContext2D.cpp:
>+        (WebCore::CanvasRenderingContext2D::drawTextInternal):
>+        * platform/graphics/GraphicsContext.cpp:
>+        (WebCore::GraphicsContext::clip):
>+        (WebCore::GraphicsContext::clipOut):
>+        (WebCore::GraphicsContext::clipPath):
>+        (WebCore::GraphicsContext::clipToImageBuffer):
>+        * platform/graphics/GraphicsContext.h:
>+        * platform/graphics/GraphicsContextImpl.h:
>+        * platform/graphics/ImageBuffer.h:
>+        * platform/graphics/ShadowBlur.cpp:
>+        (WebCore::ShadowBlur::drawShadowBuffer):
>+        * platform/graphics/cairo/GraphicsContextCairo.cpp:
>+        (WebCore::GraphicsContext::platformClip):
>+        (WebCore::GraphicsContext::platformClipPath):
>+        (WebCore::GraphicsContext::platformClipOut):
>+        (WebCore::GraphicsContext::platformClipToImageBuffer):
>+        (WebCore::GraphicsContext::clip): Deleted.
>+        (WebCore::GraphicsContext::clipPath): Deleted.
>+        (WebCore::GraphicsContext::clipOut): Deleted.
>+        (WebCore::GraphicsContext::clipToImageBuffer): Deleted.
>+        * platform/graphics/cairo/GraphicsContextImplCairo.cpp:
>+        (WebCore::GraphicsContextImplCairo::clipToImageBuffer):
>+        * platform/graphics/cairo/GraphicsContextImplCairo.h:
>+        * platform/graphics/cairo/ImageBufferCairo.cpp:
>+        (WebCore::ImageBuffer::copyNativeImage):
>+        * platform/graphics/cg/GraphicsContextCG.cpp:
>+        (WebCore::GraphicsContext::platformClipToImageBuffer):
>+        (WebCore::GraphicsContext::platformClip):
>+        (WebCore::GraphicsContext::platformClipOut):
>+        (WebCore::GraphicsContext::platformClipPath):
>+        (WebCore::GraphicsContext::beginPlatformTransparencyLayer):
>+        (WebCore::GraphicsContext::endPlatformTransparencyLayer):
>+        (WebCore::GraphicsContext::clipToImageBuffer): Deleted.
>+        (WebCore::GraphicsContext::clip): Deleted.
>+        (WebCore::GraphicsContext::clipOut): Deleted.
>+        (WebCore::GraphicsContext::clipPath): Deleted.
>+        * platform/graphics/displaylists/DisplayListItems.cpp:
>+        (WebCore::DisplayList::itemsDescriptors):
>+        * platform/graphics/displaylists/DisplayListItems.h:
>+        * platform/graphics/displaylists/DisplayListRecorder.cpp:
>+        (WebCore::DisplayList::Recorder::clipToImageBuffer):
>+        * platform/graphics/displaylists/DisplayListRecorder.h:
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp:
>+        (Nicosia::CairoOperationRecorder::clipToImageBuffer):
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h:
>+        * rendering/svg/SVGRenderingContext.cpp:
>+        (WebCore::SVGRenderingContext::clipToImageBuffer):
>+
>+2018-07-18  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Allow icon, widget, scrollbar and theme to be drawn through DisplayList
>+        https://bugs.webkit.org/show_bug.cgi?id=187765
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Drawing these items should go through GraphicsContext which will create
>+        special DisplayListItems for drawing them. These DisplayListItems will
>+        store all the parameters to be used when replaying the DisplayList back.
>+
>+        * platform/ControlStates.h:
>+        (WebCore::operator<<):
>+        * platform/Scrollbar.cpp:
>+        (WebCore::Scrollbar::paint):
>+        (WebCore::Scrollbar::platformPaint):
>+        * platform/Scrollbar.h:
>+        (WebCore::operator<<):
>+        * platform/Theme.cpp:
>+        (WebCore::Theme::paint):
>+        (WebCore::Theme::platformPaint):
>+        * platform/Theme.h:
>+        (WebCore::operator<<):
>+        * platform/Widget.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/Font.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/GlyphBuffer.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/Gradient.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/GraphicsContext.cpp:
>+        (WebCore::GraphicsContext::drawIcon):
>+        (WebCore::GraphicsContext::drawWidget):
>+        (WebCore::GraphicsContext::drawScrollbar):
>+        (WebCore::GraphicsContext::drawTheme):
>+        * platform/graphics/GraphicsContext.h:
>+        * platform/graphics/GraphicsContextImpl.h:
>+        * platform/graphics/Icon.h:
>+        (WebCore::Icon::paint):
>+        (WebCore::operator<<):
>+        * platform/graphics/cairo/GraphicsContextImplCairo.cpp:
>+        (WebCore::GraphicsContextImplCairo::drawIcon):
>+        (WebCore::GraphicsContextImplCairo::drawWidget):
>+        (WebCore::GraphicsContextImplCairo::drawScrollbar):
>+        (WebCore::GraphicsContextImplCairo::drawTheme):
>+        * platform/graphics/cairo/GraphicsContextImplCairo.h:
>+        * platform/graphics/displaylists/DisplayList.cpp:
>+        (WebCore::DisplayList::DisplayList::sizeInBytes const):
>+        * platform/graphics/displaylists/DisplayList.h:
>+        * platform/graphics/displaylists/DisplayListItems.cpp:
>+        * platform/graphics/displaylists/DisplayListItems.h:
>+        * platform/graphics/displaylists/DisplayListRecorder.cpp:
>+        (WebCore::DisplayList::Recorder::drawIcon):
>+        (WebCore::DisplayList::Recorder::drawWidget):
>+        (WebCore::DisplayList::Recorder::drawScrollbar):
>+        (WebCore::DisplayList::Recorder::drawTheme):
>+        * platform/graphics/displaylists/DisplayListRecorder.h:
>+        * platform/graphics/gtk/IconGtk.cpp:
>+        (WebCore::Icon::platformPaint const):
>+        (WebCore::Icon::paint): Deleted.
>+        * platform/graphics/ios/IconIOS.mm:
>+        (WebCore::Icon::platformPaint const):
>+        (WebCore::Icon::paint): Deleted.
>+        * platform/graphics/mac/IconMac.mm:
>+        (WebCore::Icon::platformPaint const):
>+        (WebCore::Icon::paint): Deleted.
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp:
>+        (Nicosia::CairoOperationRecorder::drawLinesForText):
>+        (Nicosia::CairoOperationRecorder::drawIcon):
>+        (Nicosia::CairoOperationRecorder::drawWidget):
>+        (Nicosia::CairoOperationRecorder::drawScrollbar):
>+        (Nicosia::CairoOperationRecorder::drawTheme):
>+        (Nicosia::CairoOperationRecorder::drawPath): Deleted.
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h:
>+        * platform/graphics/win/IconWin.cpp:
>+        (WebCore::Icon::platformPaint const):
>+        (WebCore::Icon::paint): Deleted.
>+        * platform/graphics/wpe/IconWPE.cpp:
>+        (WebCore::Icon::platformPaint const):
>+        (WebCore::Icon::paint): Deleted.
>+        * platform/gtk/WidgetGtk.cpp:
>+        (WebCore::Widget::paint):
>+        (WebCore::Widget::platformPaint):
>+        * platform/ios/WidgetIOS.mm:
>+        (WebCore::Widget::paint):
>+        (WebCore::Widget::platformPaint):
>+        * platform/mac/ThemeMac.h:
>+        * platform/mac/ThemeMac.mm:
>+        (WebCore::paintToggleButton):
>+        (WebCore::paintButton):
>+        (WebCore::paintStepper):
>+        (WebCore::ThemeMac::platformPaint):
>+        (WebCore::ThemeMac::paint): Deleted.
>+        * platform/mac/WidgetMac.mm:
>+        (WebCore::Widget::paint):
>+        (WebCore::Widget::platformPaint):
>+        * platform/text/TextFlags.h:
>+        (WebCore::operator<<):
>+        * platform/win/WidgetWin.cpp:
>+        (WebCore::Widget::paint):
>+        (WebCore::Widget::platformPaint):
>+        * platform/wpe/ThemeWPE.cpp:
>+        (WebCore::ThemeWPE::platformPaint):
>+        (WebCore::ThemeWPE::paintCheckbox):
>+        (WebCore::ThemeWPE::paintRadio):
>+        (WebCore::ThemeWPE::paintButton):
>+        (WebCore::ThemeWPE::paint): Deleted.
>+        * platform/wpe/ThemeWPE.h:
>+        * platform/wpe/WidgetWPE.cpp:
>+        (WebCore::Widget::paint):
>+        (WebCore::Widget::platformPaint):
>+        * rendering/RenderTheme.cpp:
>+        (WebCore::RenderTheme::paint):
>+
>+2018-07-17  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Templatize DisplayListItems and use std::tuple to store the arguments
>+        https://bugs.webkit.org/show_bug.cgi?id=187002
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        DisplayListItems are simple objects which represent graphics commands and
>+        their arguments. The arguments are stored while recording the DisplayList 
>+        and used when replaying it back. In fact, we do not care much about knowing
>+        these arguments expect when debugging the DisplayList. So a mechanical way
>+        to store the arguments and passing them to GraphicsContext should be sufficient.
>+        This will make adding a new DisplayListItem easier and in makes the code
>+        a lot shorter.
>+
>+        This patch templatizes the DisplayListItems classes and uses std::tuple to
>+        store the arguments. The GraphicsContext function is passed as an argument 
>+        to the template along with the types of the std::tuple items. The class
>+        hierarchy is a little bit different from the original one:
>+
>+        -- Item: This is the base class and this is what DisplayList stores.
>+        -- GeomtryItem: It is derived from Item and the only difference between
>+        it and Item is it knows the extent of the Item.
>+        -- GraphicsItem: It's a template class which takes a pointer to a GraphicsContext
>+        function, set of arguments' types. Its constructor saves the arguments in
>+        std::tuple. Its apply method calls the GraphicsContext function by passing
>+        the arguments it stores.
>+        -- SettingItem: It is derived from Item and GraphicsItem.
>+        -- DrawingItem: It is derived from GeomtryItem and GraphicsItem.
>+
>+        Notes and some drawbacks of this patch are:
>+        -- The DisplayList replaying back function should be methods of GraphicsContext.
>+        -- The operator << has to be defined for all the arguments' types.
>+        -- When an arguments is a RefCounted and the GraphicsContex function takes
>+        a raw pointer or reference to the object itself, the GraphicsItem can store
>+        a Ref or a RefPtr to the object. The implicit casting of RefPtr and Ref
>+        will do the magic when the arguments are passed to GraphicsContext.
>+
>+        * platform/graphics/Font.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/GlyphBuffer.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/Gradient.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/GraphicsContext.cpp:
>+        (WebCore::GraphicsContext::applyStateChange):
>+        * platform/graphics/GraphicsContext.h:
>+        (WebCore::operator<<):
>+        * platform/graphics/GraphicsContextImpl.h:
>+        * platform/graphics/cairo/GraphicsContextCairo.cpp:
>+        (WebCore::GraphicsContext::drawLinesForText):
>+        * platform/graphics/cairo/GraphicsContextImplCairo.cpp:
>+        (WebCore::GraphicsContextImplCairo::drawLinesForText):
>+        (WebCore::GraphicsContextImplCairo::drawPath): Deleted.
>+        * platform/graphics/cairo/GraphicsContextImplCairo.h:
>+        * platform/graphics/cg/GraphicsContextCG.cpp:
>+        (WebCore::GraphicsContext::drawLinesForText):
>+        * platform/graphics/displaylists/DisplayList.cpp:
>+        (WebCore::DisplayList::DisplayList::sizeInBytes const):
>+        * platform/graphics/displaylists/DisplayList.h:
>+        * platform/graphics/displaylists/DisplayListItems.cpp:
>+        (WebCore::DisplayList::itemsDescriptors):
>+        (WebCore::DisplayList::itemDescriptor):
>+        (WebCore::DisplayList::Item::name const):
>+        (WebCore::DisplayList::Item::argumentName const):
>+        (WebCore::DisplayList::Item::description const): Deleted.
>+        (WebCore::DisplayList::Item::sizeInBytes): Deleted.
>+        (WebCore::DisplayList::operator<<): Deleted.
>+        (WebCore::DisplayList::Save::apply const): Deleted.
>+        (WebCore::DisplayList::Restore::apply const): Deleted.
>+        (WebCore::DisplayList::Translate::apply const): Deleted.
>+        (WebCore::DisplayList::Rotate::apply const): Deleted.
>+        (WebCore::DisplayList::Scale::apply const): Deleted.
>+        (WebCore::DisplayList::ConcatenateCTM::ConcatenateCTM): Deleted.
>+        (WebCore::DisplayList::ConcatenateCTM::apply const): Deleted.
>+        (WebCore::DisplayList::SetState::apply const): Deleted.
>+        (WebCore::DisplayList::SetState::accumulate): Deleted.
>+        (WebCore::DisplayList::SetLineCap::apply const): Deleted.
>+        (WebCore::DisplayList::SetLineDash::apply const): Deleted.
>+        (WebCore::DisplayList::SetLineJoin::apply const): Deleted.
>+        (WebCore::DisplayList::SetMiterLimit::apply const): Deleted.
>+        (WebCore::DisplayList::ClearShadow::apply const): Deleted.
>+        (WebCore::DisplayList::Clip::apply const): Deleted.
>+        (WebCore::DisplayList::ClipOut::apply const): Deleted.
>+        (WebCore::DisplayList::ClipOutToPath::apply const): Deleted.
>+        (WebCore::DisplayList::ClipPath::apply const): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::DrawGlyphs): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::generateGlyphBuffer const): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::apply const): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::computeBounds): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::localBounds const): Deleted.
>+        (WebCore::DisplayList::DrawImage::DrawImage): Deleted.
>+        (WebCore::DisplayList::DrawImage::apply const): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::DrawTiledImage): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::apply const): Deleted.
>+        (WebCore::DisplayList::DrawTiledScaledImage::DrawTiledScaledImage): Deleted.
>+        (WebCore::DisplayList::DrawTiledScaledImage::apply const): Deleted.
>+        (WebCore::DisplayList::DrawNativeImage::DrawNativeImage): Deleted.
>+        (WebCore::DisplayList::DrawNativeImage::apply const): Deleted.
>+        (WebCore::DisplayList::DrawPattern::DrawPattern): Deleted.
>+        (WebCore::DisplayList::DrawPattern::apply const): Deleted.
>+        (WebCore::DisplayList::DrawRect::apply const): Deleted.
>+        (WebCore::DisplayList::DrawLine::localBounds const): Deleted.
>+        (WebCore::DisplayList::DrawLine::apply const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::apply const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::localBounds const): Deleted.
>+        (WebCore::DisplayList::DrawLineForDocumentMarker::apply const): Deleted.
>+        (WebCore::DisplayList::DrawLineForDocumentMarker::localBounds const): Deleted.
>+        (WebCore::DisplayList::DrawEllipse::apply const): Deleted.
>+        (WebCore::DisplayList::DrawPath::apply const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::apply const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::localBounds const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::apply const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::localBounds const): Deleted.
>+        (WebCore::DisplayList::FillRect::apply const): Deleted.
>+        (WebCore::DisplayList::FillRectWithColor::apply const): Deleted.
>+        (WebCore::DisplayList::FillRectWithGradient::apply const): Deleted.
>+        (WebCore::DisplayList::FillCompositedRect::apply const): Deleted.
>+        (WebCore::DisplayList::FillRoundedRect::apply const): Deleted.
>+        (WebCore::DisplayList::FillRectWithRoundedHole::apply const): Deleted.
>+        (WebCore::DisplayList::FillPath::apply const): Deleted.
>+        (WebCore::DisplayList::FillEllipse::apply const): Deleted.
>+        (WebCore::DisplayList::StrokeRect::localBounds const): Deleted.
>+        (WebCore::DisplayList::StrokeRect::apply const): Deleted.
>+        (WebCore::DisplayList::StrokePath::localBounds const): Deleted.
>+        (WebCore::DisplayList::StrokePath::apply const): Deleted.
>+        (WebCore::DisplayList::StrokeEllipse::localBounds const): Deleted.
>+        (WebCore::DisplayList::StrokeEllipse::apply const): Deleted.
>+        (WebCore::DisplayList::ClearRect::apply const): Deleted.
>+        (WebCore::DisplayList::BeginTransparencyLayer::apply const): Deleted.
>+        (WebCore::DisplayList::EndTransparencyLayer::apply const): Deleted.
>+        (WebCore::DisplayList::ApplyStrokePattern::apply const): Deleted.
>+        (WebCore::DisplayList::ApplyFillPattern::apply const): Deleted.
>+        (WebCore::DisplayList::ApplyDeviceScaleFactor::apply const): Deleted.
>+        * platform/graphics/displaylists/DisplayListItems.h:
>+        (WebCore::DisplayList::Item::isGeometryItem const):
>+        (WebCore::DisplayList::Item::dump const):
>+        (WebCore::DisplayList::Item::type const):
>+        (WebCore::DisplayList::Item::Item):
>+        (WebCore::DisplayList::GeometryItem::setExtent):
>+        (WebCore::DisplayList::GeometryItem::extent const):
>+        (WebCore::DisplayList::GeometryItem::localBounds const):
>+        (WebCore::DisplayList::GeometryItem::GeometryItem):
>+        (WebCore::DisplayList::GraphicsItem::GraphicsItem):
>+        (WebCore::DisplayList::GraphicsItem::argument const):
>+        (WebCore::DisplayList::GraphicsItem::apply const):
>+        (WebCore::DisplayList::GraphicsItem::iterarte const):
>+        (WebCore::DisplayList::SettingItem::create):
>+        (WebCore::DisplayList::SettingItem::SettingItem):
>+        (WebCore::DisplayList::DrawingItem::create):
>+        (WebCore::DisplayList::DrawingItem::DrawingItem):
>+        (WebCore::DisplayList::Save::restoreIndex const):
>+        (WebCore::DisplayList::Save::setRestoreIndex):
>+        (WebCore::DisplayList::SetState::state const):
>+        (WebCore::DisplayList::DrawGlyphs::create):
>+        (WebCore::DisplayList::DrawGlyphs::subGlyphBuffer):
>+        (WebCore::DisplayList::operator<<):
>+        (WebCore::DisplayList::Item::isDrawingItem const): Deleted.
>+        (WebCore::DisplayList::Item::isStateItem const): Deleted.
>+        (WebCore::DisplayList::Item::isStateItemType): Deleted.
>+        (WebCore::DisplayList::DrawingItem::setExtent): Deleted.
>+        (WebCore::DisplayList::DrawingItem::extent const): Deleted.
>+        (WebCore::DisplayList::DrawingItem::extentKnown const): Deleted.
>+        (WebCore::DisplayList::DrawingItem::localBounds const): Deleted.
>+        (WebCore::DisplayList::Save::create): Deleted.
>+        (WebCore::DisplayList::Save::Save): Deleted.
>+        (WebCore::DisplayList::Restore::create): Deleted.
>+        (WebCore::DisplayList::Restore::Restore): Deleted.
>+        (WebCore::DisplayList::Translate::create): Deleted.
>+        (WebCore::DisplayList::Translate::x const): Deleted.
>+        (WebCore::DisplayList::Translate::y const): Deleted.
>+        (WebCore::DisplayList::Translate::Translate): Deleted.
>+        (WebCore::DisplayList::Rotate::create): Deleted.
>+        (WebCore::DisplayList::Rotate::angle const): Deleted.
>+        (WebCore::DisplayList::Rotate::Rotate): Deleted.
>+        (WebCore::DisplayList::Scale::create): Deleted.
>+        (WebCore::DisplayList::Scale::amount const): Deleted.
>+        (WebCore::DisplayList::Scale::Scale): Deleted.
>+        (WebCore::DisplayList::ConcatenateCTM::create): Deleted.
>+        (WebCore::DisplayList::ConcatenateCTM::transform const): Deleted.
>+        (WebCore::DisplayList::SetState::create): Deleted.
>+        (WebCore::DisplayList::SetState::SetState): Deleted.
>+        (WebCore::DisplayList::SetLineCap::create): Deleted.
>+        (WebCore::DisplayList::SetLineCap::lineCap const): Deleted.
>+        (WebCore::DisplayList::SetLineCap::SetLineCap): Deleted.
>+        (WebCore::DisplayList::SetLineDash::create): Deleted.
>+        (WebCore::DisplayList::SetLineDash::dashArray const): Deleted.
>+        (WebCore::DisplayList::SetLineDash::dashOffset const): Deleted.
>+        (WebCore::DisplayList::SetLineDash::SetLineDash): Deleted.
>+        (WebCore::DisplayList::SetLineJoin::create): Deleted.
>+        (WebCore::DisplayList::SetLineJoin::lineJoin const): Deleted.
>+        (WebCore::DisplayList::SetLineJoin::SetLineJoin): Deleted.
>+        (WebCore::DisplayList::SetMiterLimit::create): Deleted.
>+        (WebCore::DisplayList::SetMiterLimit::miterLimit const): Deleted.
>+        (WebCore::DisplayList::SetMiterLimit::SetMiterLimit): Deleted.
>+        (WebCore::DisplayList::ClearShadow::create): Deleted.
>+        (WebCore::DisplayList::ClearShadow::ClearShadow): Deleted.
>+        (WebCore::DisplayList::Clip::create): Deleted.
>+        (WebCore::DisplayList::Clip::rect const): Deleted.
>+        (WebCore::DisplayList::Clip::Clip): Deleted.
>+        (WebCore::DisplayList::ClipOut::create): Deleted.
>+        (WebCore::DisplayList::ClipOut::rect const): Deleted.
>+        (WebCore::DisplayList::ClipOut::ClipOut): Deleted.
>+        (WebCore::DisplayList::ClipOutToPath::create): Deleted.
>+        (WebCore::DisplayList::ClipOutToPath::path const): Deleted.
>+        (WebCore::DisplayList::ClipOutToPath::ClipOutToPath): Deleted.
>+        (WebCore::DisplayList::ClipPath::create): Deleted.
>+        (WebCore::DisplayList::ClipPath::path const): Deleted.
>+        (WebCore::DisplayList::ClipPath::windRule const): Deleted.
>+        (WebCore::DisplayList::ClipPath::ClipPath): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::blockLocation const): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::setBlockLocation): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::localAnchor const): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::anchorPoint const): Deleted.
>+        (WebCore::DisplayList::DrawGlyphs::glyphs const): Deleted.
>+        (WebCore::DisplayList::DrawImage::create): Deleted.
>+        (WebCore::DisplayList::DrawImage::image const): Deleted.
>+        (WebCore::DisplayList::DrawImage::source const): Deleted.
>+        (WebCore::DisplayList::DrawImage::destination const): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::create): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::image const): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::source const): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::destination const): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::tileSize const): Deleted.
>+        (WebCore::DisplayList::DrawTiledImage::spacing const): Deleted.
>+        (WebCore::DisplayList::DrawTiledScaledImage::create): Deleted.
>+        (WebCore::DisplayList::DrawTiledScaledImage::image const): Deleted.
>+        (WebCore::DisplayList::DrawTiledScaledImage::source const): Deleted.
>+        (WebCore::DisplayList::DrawTiledScaledImage::destination const): Deleted.
>+        (WebCore::DisplayList::DrawNativeImage::create): Deleted.
>+        (WebCore::DisplayList::DrawNativeImage::source const): Deleted.
>+        (WebCore::DisplayList::DrawNativeImage::destination const): Deleted.
>+        (WebCore::DisplayList::DrawPattern::create): Deleted.
>+        (WebCore::DisplayList::DrawPattern::image const): Deleted.
>+        (WebCore::DisplayList::DrawPattern::patternTransform const): Deleted.
>+        (WebCore::DisplayList::DrawPattern::tileRect const): Deleted.
>+        (WebCore::DisplayList::DrawPattern::destRect const): Deleted.
>+        (WebCore::DisplayList::DrawPattern::phase const): Deleted.
>+        (WebCore::DisplayList::DrawPattern::spacing const): Deleted.
>+        (WebCore::DisplayList::BeginTransparencyLayer::create): Deleted.
>+        (WebCore::DisplayList::BeginTransparencyLayer::opacity const): Deleted.
>+        (WebCore::DisplayList::BeginTransparencyLayer::BeginTransparencyLayer): Deleted.
>+        (WebCore::DisplayList::EndTransparencyLayer::create): Deleted.
>+        (WebCore::DisplayList::EndTransparencyLayer::EndTransparencyLayer): Deleted.
>+        (WebCore::DisplayList::DrawRect::create): Deleted.
>+        (WebCore::DisplayList::DrawRect::rect const): Deleted.
>+        (WebCore::DisplayList::DrawRect::borderThickness const): Deleted.
>+        (WebCore::DisplayList::DrawRect::DrawRect): Deleted.
>+        (WebCore::DisplayList::DrawLine::create): Deleted.
>+        (WebCore::DisplayList::DrawLine::point1 const): Deleted.
>+        (WebCore::DisplayList::DrawLine::point2 const): Deleted.
>+        (WebCore::DisplayList::DrawLine::DrawLine): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::create): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::setBlockLocation): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::blockLocation const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::localAnchor const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::point const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::widths const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::isPrinting const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::doubleLines const): Deleted.
>+        (WebCore::DisplayList::DrawLinesForText::DrawLinesForText): Deleted.
>+        (WebCore::DisplayList::DrawLineForDocumentMarker::create): Deleted.
>+        (WebCore::DisplayList::DrawLineForDocumentMarker::point const): Deleted.
>+        (WebCore::DisplayList::DrawLineForDocumentMarker::width const): Deleted.
>+        (WebCore::DisplayList::DrawLineForDocumentMarker::DrawLineForDocumentMarker): Deleted.
>+        (WebCore::DisplayList::DrawEllipse::create): Deleted.
>+        (WebCore::DisplayList::DrawEllipse::rect const): Deleted.
>+        (WebCore::DisplayList::DrawEllipse::DrawEllipse): Deleted.
>+        (WebCore::DisplayList::DrawPath::create): Deleted.
>+        (WebCore::DisplayList::DrawPath::path const): Deleted.
>+        (WebCore::DisplayList::DrawPath::DrawPath): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::create): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::path const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::width const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::offset const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::color const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingPath::DrawFocusRingPath): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::create): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::rects const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::width const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::offset const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::color const): Deleted.
>+        (WebCore::DisplayList::DrawFocusRingRects::DrawFocusRingRects): Deleted.
>+        (WebCore::DisplayList::FillRect::create): Deleted.
>+        (WebCore::DisplayList::FillRect::rect const): Deleted.
>+        (WebCore::DisplayList::FillRect::FillRect): Deleted.
>+        (WebCore::DisplayList::FillRectWithColor::create): Deleted.
>+        (WebCore::DisplayList::FillRectWithColor::rect const): Deleted.
>+        (WebCore::DisplayList::FillRectWithColor::color const): Deleted.
>+        (WebCore::DisplayList::FillRectWithColor::FillRectWithColor): Deleted.
>+        (WebCore::DisplayList::FillRectWithGradient::create): Deleted.
>+        (WebCore::DisplayList::FillRectWithGradient::rect const): Deleted.
>+        (WebCore::DisplayList::FillRectWithGradient::FillRectWithGradient): Deleted.
>+        (WebCore::DisplayList::FillCompositedRect::create): Deleted.
>+        (WebCore::DisplayList::FillCompositedRect::rect const): Deleted.
>+        (WebCore::DisplayList::FillCompositedRect::color const): Deleted.
>+        (WebCore::DisplayList::FillCompositedRect::compositeOperator const): Deleted.
>+        (WebCore::DisplayList::FillCompositedRect::blendMode const): Deleted.
>+        (WebCore::DisplayList::FillCompositedRect::FillCompositedRect): Deleted.
>+        (WebCore::DisplayList::FillRoundedRect::create): Deleted.
>+        (WebCore::DisplayList::FillRoundedRect::roundedRect const): Deleted.
>+        (WebCore::DisplayList::FillRoundedRect::color const): Deleted.
>+        (WebCore::DisplayList::FillRoundedRect::blendMode const): Deleted.
>+        (WebCore::DisplayList::FillRoundedRect::FillRoundedRect): Deleted.
>+        (WebCore::DisplayList::FillRectWithRoundedHole::create): Deleted.
>+        (WebCore::DisplayList::FillRectWithRoundedHole::rect const): Deleted.
>+        (WebCore::DisplayList::FillRectWithRoundedHole::roundedHoleRect const): Deleted.
>+        (WebCore::DisplayList::FillRectWithRoundedHole::color const): Deleted.
>+        (WebCore::DisplayList::FillRectWithRoundedHole::FillRectWithRoundedHole): Deleted.
>+        (WebCore::DisplayList::FillPath::create): Deleted.
>+        (WebCore::DisplayList::FillPath::path const): Deleted.
>+        (WebCore::DisplayList::FillPath::FillPath): Deleted.
>+        (WebCore::DisplayList::FillEllipse::create): Deleted.
>+        (WebCore::DisplayList::FillEllipse::rect const): Deleted.
>+        (WebCore::DisplayList::FillEllipse::FillEllipse): Deleted.
>+        (WebCore::DisplayList::StrokeRect::create): Deleted.
>+        (WebCore::DisplayList::StrokeRect::rect const): Deleted.
>+        (WebCore::DisplayList::StrokeRect::lineWidth const): Deleted.
>+        (WebCore::DisplayList::StrokeRect::StrokeRect): Deleted.
>+        (WebCore::DisplayList::StrokePath::create): Deleted.
>+        (WebCore::DisplayList::StrokePath::path const): Deleted.
>+        (WebCore::DisplayList::StrokePath::StrokePath): Deleted.
>+        (WebCore::DisplayList::StrokeEllipse::create): Deleted.
>+        (WebCore::DisplayList::StrokeEllipse::rect const): Deleted.
>+        (WebCore::DisplayList::StrokeEllipse::StrokeEllipse): Deleted.
>+        (WebCore::DisplayList::ClearRect::create): Deleted.
>+        (WebCore::DisplayList::ClearRect::rect const): Deleted.
>+        (WebCore::DisplayList::ClearRect::ClearRect): Deleted.
>+        (WebCore::DisplayList::ApplyStrokePattern::create): Deleted.
>+        (WebCore::DisplayList::ApplyStrokePattern::ApplyStrokePattern): Deleted.
>+        (WebCore::DisplayList::ApplyFillPattern::create): Deleted.
>+        (WebCore::DisplayList::ApplyFillPattern::ApplyFillPattern): Deleted.
>+        (WebCore::DisplayList::ApplyDeviceScaleFactor::create): Deleted.
>+        (WebCore::DisplayList::ApplyDeviceScaleFactor::scaleFactor const): Deleted.
>+        (WebCore::DisplayList::ApplyDeviceScaleFactor::ApplyDeviceScaleFactor): Deleted.
>+        * platform/graphics/displaylists/DisplayListRecorder.cpp:
>+        (WebCore::DisplayList::Recorder::willAppendItem):
>+        (WebCore::DisplayList::Recorder::drawGlyphs):
>+        (WebCore::DisplayList::Recorder::drawImage):
>+        (WebCore::DisplayList::Recorder::drawTiledImage):
>+        (WebCore::DisplayList::Recorder::drawNativeImage):
>+        (WebCore::DisplayList::Recorder::drawPattern):
>+        (WebCore::DisplayList::Recorder::beginTransparencyLayer):
>+        (WebCore::DisplayList::Recorder::drawRect):
>+        (WebCore::DisplayList::Recorder::drawLine):
>+        (WebCore::DisplayList::Recorder::drawLinesForText):
>+        (WebCore::DisplayList::Recorder::drawLineForDocumentMarker):
>+        (WebCore::DisplayList::Recorder::drawEllipse):
>+        (WebCore::DisplayList::Recorder::drawPath):
>+        (WebCore::DisplayList::Recorder::drawFocusRing):
>+        (WebCore::DisplayList::Recorder::fillRect):
>+        (WebCore::DisplayList::Recorder::fillRoundedRect):
>+        (WebCore::DisplayList::Recorder::fillRectWithRoundedHole):
>+        (WebCore::DisplayList::Recorder::fillPath):
>+        (WebCore::DisplayList::Recorder::fillEllipse):
>+        (WebCore::DisplayList::Recorder::strokeRect):
>+        (WebCore::DisplayList::Recorder::strokePath):
>+        (WebCore::DisplayList::Recorder::strokeEllipse):
>+        (WebCore::DisplayList::Recorder::clearRect):
>+        (WebCore::DisplayList::Recorder::updateItemExtent const):
>+        * platform/graphics/displaylists/DisplayListRecorder.h:
>+        * platform/graphics/displaylists/DisplayListReplayer.cpp:
>+        (WebCore::DisplayList::Replayer::replay):
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp:
>+        (Nicosia::CairoOperationRecorder::drawLinesForText):
>+        (Nicosia::CairoOperationRecorder::drawPath): Deleted.
>+        * platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h:
>+        * platform/graphics/win/GraphicsContextDirect2D.cpp:
>+        (WebCore::GraphicsContext::drawLinesForText):
>+        * platform/text/TextFlags.h:
>+        (WebCore::operator<<):
>+
> 2018-07-25  Chris Dumez  <cdumez@apple.com>
> 
>         Allow ActiveDOMObject's canSuspend / suspend / resume overrides to destroy ActiveDOMObjects
>diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
>index a7252eee19ddc7797b3329ecbf95d0aaaedea73c..629b9b9611e9e573f451d97136128a292bce4a45 100644
>--- a/Source/WebKit/ChangeLog
>+++ b/Source/WebKit/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-07-25  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Enable DisplayList recording for ShareableBitmap::paint()
>+        https://bugs.webkit.org/show_bug.cgi?id=187841
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * Platform/cg/CGUtilities.cpp: Removed.
>+        * Platform/cg/CGUtilities.h: Removed.
>+        * Shared/cg/ShareableBitmapCG.cpp:
>+        (WebKit::ShareableBitmap::paint):
>+        * WebKit.xcodeproj/project.pbxproj:
>+
> 2018-07-25  Brent Fulgham  <bfulgham@apple.com>
> 
>         [macOS] Update sandboxes for revised OpenCL calls and streaming media
>diff --git a/Source/WebCore/WebCore.xcodeproj/project.pbxproj b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>index 49206e40216931fcd1216a9193716a4bdb4280db..70e94151f682d623f02cbdeaa134d3a798988de0 100644
>--- a/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>+++ b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>@@ -8386,6 +8386,7 @@
> 		555B87EB1CAAF0AB00349425 /* ImageDecoderCG.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ImageDecoderCG.h; sourceTree = "<group>"; };
> 		5576A5621D88A70800CCC04C /* ImageFrame.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ImageFrame.cpp; sourceTree = "<group>"; };
> 		5576A5631D88A70800CCC04C /* ImageFrame.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ImageFrame.h; sourceTree = "<group>"; };
>+		5584A1AD2102DF97005B70E1 /* RenderLayerContext.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RenderLayerContext.h; sourceTree = "<group>"; };
> 		5597FCCB2076C06800D35BB0 /* GlyphDisplayListCache.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = GlyphDisplayListCache.h; sourceTree = "<group>"; };
> 		55A336F61D8209F40022C4C7 /* NativeImage.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = NativeImage.h; sourceTree = "<group>"; };
> 		55A336F81D821E3C0022C4C7 /* ImageBackingStore.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ImageBackingStore.h; sourceTree = "<group>"; };
>@@ -25955,6 +25956,7 @@
> 				0F580CFB0F12DE9B0051D689 /* RenderLayerBacking.h */,
> 				0F580CFA0F12DE9B0051D689 /* RenderLayerCompositor.cpp */,
> 				0F580CF90F12DE9B0051D689 /* RenderLayerCompositor.h */,
>+				5584A1AD2102DF97005B70E1 /* RenderLayerContext.h */,
> 				50D10D971545F5760096D288 /* RenderLayerFilterInfo.cpp */,
> 				50D10D981545F5760096D288 /* RenderLayerFilterInfo.h */,
> 				3C244FE5A375AC633F88BE6F /* RenderLayerModelObject.cpp */,
>diff --git a/Source/WebCore/html/ImageBitmap.cpp b/Source/WebCore/html/ImageBitmap.cpp
>index 7de346707ac84008cbc68b9b1b428769ed2d70dd..3b4e1e1300232f94b577b5d4abc6b777fc1c2ce8 100644
>--- a/Source/WebCore/html/ImageBitmap.cpp
>+++ b/Source/WebCore/html/ImageBitmap.cpp
>@@ -503,6 +503,7 @@ public:
> 
>     void didDraw(const Image&) override { }
> 
>+    void addClientWaitingForAsyncDecoding(CachedImageClient&) override { }
>     bool canDestroyDecodedData(const Image&) override { return true; }
>     void imageFrameAvailable(const Image&, ImageAnimatingState, const IntRect* = nullptr, DecodingStatus = DecodingStatus::Invalid) override { }
>     void changedInRect(const Image&, const IntRect* = nullptr) override { }
>diff --git a/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp b/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp
>index e9ae63c4980d53925222f41959482e98145d77e6..050953c05d4c29193157dc35df7d003d74b44d76 100644
>--- a/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp
>+++ b/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp
>@@ -556,7 +556,7 @@ void CanvasRenderingContext2D::drawTextInternal(const String& text, float x, flo
>         }
> 
>         GraphicsContextStateSaver stateSaver(*c);
>-        c->clipToImageBuffer(*maskImage, maskRect);
>+        c->clipToImageBuffer(maskImage->copyNativeImage(DontCopyBackingStore), maskRect, maskImage->sizeForDestinationSize(maskRect.size()));
>         drawStyle.applyFillColor(*c);
>         c->fillRect(maskRect);
>         return;
>diff --git a/Source/WebCore/loader/cache/CachedImage.cpp b/Source/WebCore/loader/cache/CachedImage.cpp
>index 23761a603a78dc8c2c1b42c649dac30c67eaafa6..b3111cad2ac20df70128d371a2d899333e40d1fd 100644
>--- a/Source/WebCore/loader/cache/CachedImage.cpp
>+++ b/Source/WebCore/loader/cache/CachedImage.cpp
>@@ -383,6 +383,12 @@ void CachedImage::CachedImageObserver::didDraw(const Image& image)
>         cachedImage->didDraw(image);
> }
> 
>+void CachedImage::CachedImageObserver::addClientWaitingForAsyncDecoding(CachedImageClient& client)
>+{
>+    for (auto cachedImage : m_cachedImages)
>+        cachedImage->addClientWaitingForAsyncDecoding(client);
>+}
>+
> bool CachedImage::CachedImageObserver::canDestroyDecodedData(const Image& image)
> {
>     for (auto cachedImage : m_cachedImages) {
>diff --git a/Source/WebCore/loader/cache/CachedImage.h b/Source/WebCore/loader/cache/CachedImage.h
>index 701851f987b8a1735fcb3d17c516c7eb6c716f84..0529f87a4038e9e0b385bacc5cd33da0e5102d27 100644
>--- a/Source/WebCore/loader/cache/CachedImage.h
>+++ b/Source/WebCore/loader/cache/CachedImage.h
>@@ -146,6 +146,7 @@ private:
>         void decodedSizeChanged(const Image&, long long delta) final;
>         void didDraw(const Image&) final;
> 
>+        void addClientWaitingForAsyncDecoding(CachedImageClient&) final;
>         bool canDestroyDecodedData(const Image&) final;
>         void imageFrameAvailable(const Image&, ImageAnimatingState, const IntRect* changeRect = nullptr, DecodingStatus = DecodingStatus::Invalid) final;
>         void changedInRect(const Image&, const IntRect*) final;
>diff --git a/Source/WebCore/platform/ControlStates.h b/Source/WebCore/platform/ControlStates.h
>index 1dce8b75807f0ddf7c5ab1f19e7539bc728d6971..fe96afdcbadb4057fd610526223e95f0dbdef102 100644
>--- a/Source/WebCore/platform/ControlStates.h
>+++ b/Source/WebCore/platform/ControlStates.h
>@@ -28,6 +28,7 @@
> 
> #include <wtf/RetainPtr.h>
> #include <wtf/Seconds.h>
>+#include <wtf/text/TextStream.h>
> 
> #if PLATFORM(COCOA)
> #ifndef __OBJC__
>@@ -103,6 +104,12 @@ private:
> #endif
> };
> 
>+inline TextStream& operator<<(TextStream& ts, const ControlStates&)
>+{
>+    // FIXME: dump the ControlStates members to the TextStream.
>+    return ts;
>+}
>+
> }
> 
> #endif
>diff --git a/Source/WebCore/platform/Scrollbar.cpp b/Source/WebCore/platform/Scrollbar.cpp
>index f9e05f55f7568aee21ca849664bc3d6e57e11bef..de28f0274d6e3b244b2873c0b9e76b7b0809a171 100644
>--- a/Source/WebCore/platform/Scrollbar.cpp
>+++ b/Source/WebCore/platform/Scrollbar.cpp
>@@ -163,11 +163,16 @@ void Scrollbar::paint(GraphicsContext& context, const IntRect& damageRect, Widge
>         return;
>     }
> 
>-    if (context.paintingDisabled() || !frameRect().intersects(damageRect))
>+    if (!frameRect().intersects(damageRect))
>         return;
> 
>-    if (!theme().paint(*this, context, damageRect))
>-        Widget::paint(context, damageRect);
>+    context.drawScrollbar(*this, damageRect);
>+}
>+
>+void Scrollbar::platformPaint(GraphicsContext& context, const IntRect& rect)
>+{
>+    if (!theme().paint(*this, context, rect))
>+        Widget::paint(context, rect);
> }
> 
> void Scrollbar::autoscrollTimerFired()
>diff --git a/Source/WebCore/platform/Scrollbar.h b/Source/WebCore/platform/Scrollbar.h
>index 62f5044a8393be64eebbc6475475e8b2e2d72024..c0d430ad3db3399e6e375efe8c379ec78a7e027b 100644
>--- a/Source/WebCore/platform/Scrollbar.h
>+++ b/Source/WebCore/platform/Scrollbar.h
>@@ -84,6 +84,7 @@ public:
>     void setPressedPos(int p) { m_pressedPos = p; }
> 
>     void paint(GraphicsContext&, const IntRect& damageRect, Widget::SecurityOriginPaintPolicy = SecurityOriginPaintPolicy::AnyOrigin) override;
>+    void platformPaint(GraphicsContext&, const IntRect&);
> 
>     bool enabled() const { return m_enabled; }
>     virtual void setEnabled(bool);
>@@ -182,6 +183,12 @@ private:
>     bool isScrollbar() const override { return true; }
> };
> 
>+inline TextStream& operator<<(TextStream& ts, const Scrollbar&)
>+{
>+    // FIXME: dump the Scrollbar members to the TextStream.
>+    return ts;
>+}
>+    
> } // namespace WebCore
> 
> SPECIALIZE_TYPE_TRAITS_WIDGET(Scrollbar, isScrollbar())
>diff --git a/Source/WebCore/platform/Theme.cpp b/Source/WebCore/platform/Theme.cpp
>index c0af192b1d1525b05ad3af5fc809487c7b2610e2..64bb4f78dbf874a01fc1b2cc218df56771908ef6 100644
>--- a/Source/WebCore/platform/Theme.cpp
>+++ b/Source/WebCore/platform/Theme.cpp
>@@ -57,7 +57,12 @@ bool Theme::controlRequiresPreWhiteSpace(ControlPart) const
>     return false;
> }
> 
>-void Theme::paint(ControlPart, ControlStates&, GraphicsContext&, const FloatRect&, float, ScrollView*, float, float, bool, bool)
>+void Theme::paint(GraphicsContext& context, ControlPart part, ControlStates& states, const FloatRect& zoomedRect, float zoomFactor, ScrollView* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance)
>+{
>+    context.drawTheme(*this, part, states, zoomedRect, zoomFactor, scrollView, deviceScaleFactor, pageScaleFactor, useSystemAppearance, useDarkAppearance);
>+}
>+
>+void Theme::platformPaint(GraphicsContext&, ControlPart, ControlStates&, const FloatRect&, float, void*, float, float, bool, bool)
> {
> }
> 
>diff --git a/Source/WebCore/platform/Theme.h b/Source/WebCore/platform/Theme.h
>index e8cec35d5916bcdeb1de3988aa369b5be244e032..d63254bcaf3846f722559eeea2e5ce793a9451e1 100644
>--- a/Source/WebCore/platform/Theme.h
>+++ b/Source/WebCore/platform/Theme.h
>@@ -28,6 +28,7 @@
> #include "ThemeTypes.h"
> #include <wtf/Forward.h>
> #include <wtf/Optional.h>
>+#include <wtf/text/TextStream.h>
> 
> namespace WebCore {
> 
>@@ -68,7 +69,8 @@ public:
>     virtual bool controlRequiresPreWhiteSpace(ControlPart) const;
> 
>     // Method for painting a control. The rect is in zoomed coordinates.
>-    virtual void paint(ControlPart, ControlStates&, GraphicsContext&, const FloatRect& zoomedRect, float zoomFactor, ScrollView*, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance);
>+    void paint(GraphicsContext&, ControlPart, ControlStates&, const FloatRect& zoomedRect, float zoomFactor, ScrollView*, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance);
>+    virtual void platformPaint(GraphicsContext&, ControlPart, ControlStates&, const FloatRect& zoomedRect, float zoomFactor, void*, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance);
> 
>     // Some controls may spill out of their containers (e.g., the check on an OS X checkbox).  When these controls repaint,
>     // the theme needs to communicate this inflated rect to the engine so that it can invalidate the whole control.
>@@ -88,5 +90,11 @@ private:
>     Theme(const Theme&) = delete;
>     void operator=(const Theme&) = delete;
> };
>+    
>+inline TextStream& operator<<(TextStream& ts, const Theme&)
>+{
>+    // FIXME: dump the Theme members to the TextStream.
>+    return ts;
>+}
> 
> } // namespace WebCore
>diff --git a/Source/WebCore/platform/Widget.h b/Source/WebCore/platform/Widget.h
>index f31f245a80bbd70acce62118549cd2d400ac21f3..99cd83bfcb063f5dd102ad44200e738b2be3bfad 100644
>--- a/Source/WebCore/platform/Widget.h
>+++ b/Source/WebCore/platform/Widget.h
>@@ -38,6 +38,7 @@
> #include <wtf/RefCounted.h>
> #include <wtf/TypeCasts.h>
> #include <wtf/WeakPtr.h>
>+#include <wtf/text/TextStream.h>
> 
> #if PLATFORM(COCOA)
> #include <wtf/RetainPtr.h>
>@@ -114,6 +115,7 @@ public:
>     enum class SecurityOriginPaintPolicy { AnyOrigin, AccessibleOriginOnly };
> 
>     WEBCORE_EXPORT virtual void paint(GraphicsContext&, const IntRect&, SecurityOriginPaintPolicy = SecurityOriginPaintPolicy::AnyOrigin);
>+    void platformPaint(GraphicsContext&, const IntRect&);
>     void invalidate() { invalidateRect(boundsRect()); }
>     virtual void invalidateRect(const IntRect&) = 0;
> 
>@@ -244,6 +246,12 @@ inline void Widget::retainPlatformWidget()
> 
> #endif
> 
>+inline TextStream& operator<<(TextStream& ts, const Widget&)
>+{
>+    // FIXME: dump the Widget members to the TextStream.
>+    return ts;
>+}
>+    
> } // namespace WebCore
> 
> #define SPECIALIZE_TYPE_TRAITS_WIDGET(ToValueTypeName, predicate) \
>diff --git a/Source/WebCore/platform/graphics/Font.h b/Source/WebCore/platform/graphics/Font.h
>index 52edbae94537fa720d4714b181ed26f727b6e2be..7185986b230a3517fcd6ca97856bb2e628f7bcae 100644
>--- a/Source/WebCore/platform/graphics/Font.h
>+++ b/Source/WebCore/platform/graphics/Font.h
>@@ -37,6 +37,7 @@
> #include <wtf/BitVector.h>
> #include <wtf/Optional.h>
> #include <wtf/text/StringHash.h>
>+#include <wtf/text/TextStream.h>
> 
> #if PLATFORM(COCOA)
> #include <wtf/RetainPtr.h>
>@@ -370,6 +371,12 @@ ALWAYS_INLINE float Font::widthForGlyph(Glyph glyph) const
>     return width;
> }
> 
>+inline WTF::TextStream& operator<<(WTF::TextStream& ts, const Font&)
>+{
>+    // FIXME: dump the Font members to the TextStream.
>+    return ts;
>+}
>+
> } // namespace WebCore
> 
> #endif // Font_h
>diff --git a/Source/WebCore/platform/graphics/GlyphBuffer.h b/Source/WebCore/platform/graphics/GlyphBuffer.h
>index 1752dcbd08e8f6cc799be45637cccfcc52e78c3c..45f17facd7b0e1da2f5cfc9150ebb2fd5af65330 100644
>--- a/Source/WebCore/platform/graphics/GlyphBuffer.h
>+++ b/Source/WebCore/platform/graphics/GlyphBuffer.h
>@@ -34,6 +34,7 @@
> #include "Glyph.h"
> #include <climits>
> #include <wtf/Vector.h>
>+#include <wtf/text/TextStream.h>
> 
> #if USE(CG)
> #include <CoreGraphics/CGGeometry.h>
>@@ -228,5 +229,11 @@ private:
> #endif
> };
> 
>+inline WTF::TextStream& operator<<(WTF::TextStream& ts, const GlyphBuffer&)
>+{
>+    // FIXME: dump the GlyphBuffer members to the TextStream.
>+    return ts;
>+}
>+
> }
> #endif
>diff --git a/Source/WebCore/platform/graphics/Gradient.h b/Source/WebCore/platform/graphics/Gradient.h
>index c7fc4c6e369380a5e9a773124f740a63fdb5100b..7bfbffa47cd240ed776a11e19236bcdc00dfcde9 100644
>--- a/Source/WebCore/platform/graphics/Gradient.h
>+++ b/Source/WebCore/platform/graphics/Gradient.h
>@@ -34,6 +34,7 @@
> #include <wtf/RefCounted.h>
> #include <wtf/Variant.h>
> #include <wtf/Vector.h>
>+#include <wtf/text/TextStream.h>
> 
> #if USE(CG)
> typedef struct CGContext* CGContextRef;
>@@ -156,4 +157,10 @@ private:
>     PlatformGradient m_gradient;
> };
> 
>+inline WTF::TextStream& operator<<(WTF::TextStream& ts, const Gradient&)
>+{
>+    // FIXME: dump the Gradient members to the TextStream.
>+    return ts;
>+}
>+
> }
>diff --git a/Source/WebCore/platform/graphics/GraphicsContext.cpp b/Source/WebCore/platform/graphics/GraphicsContext.cpp
>index c9731aa5194866cf3fba5e033cc18d73c58637fa..2500cdfb3e6996072670bc33fac2cd9ced8efd32 100644
>--- a/Source/WebCore/platform/graphics/GraphicsContext.cpp
>+++ b/Source/WebCore/platform/graphics/GraphicsContext.cpp
>@@ -31,10 +31,14 @@
> #include "FloatRoundedRect.h"
> #include "Gradient.h"
> #include "GraphicsContextImpl.h"
>+#include "Icon.h"
> #include "ImageBuffer.h"
> #include "IntRect.h"
> #include "RoundedRect.h"
>+#include "Scrollbar.h"
> #include "TextRun.h"
>+#include "Theme.h"
>+#include "Widget.h"
> #include <wtf/text/TextStream.h>
> 
> namespace WebCore {
>@@ -713,44 +717,70 @@ ImageDrawResult GraphicsContext::drawImage(Image& image, const FloatRect& destin
> 
> ImageDrawResult GraphicsContext::drawImage(Image& image, const FloatRect& destination, const FloatRect& source, const ImagePaintingOptions& imagePaintingOptions)
> {
>+    ImageDrawResult result = ImageDrawResult::DidNothing;
>     if (paintingDisabled())
>-        return ImageDrawResult::DidNothing;
>+        return result;
> 
>     if (m_impl)
>-        return m_impl->drawImage(image, destination, source, imagePaintingOptions);
>+        result = m_impl->drawImage(image, destination, source, imagePaintingOptions);
>+    else {
>+        InterpolationQualityMaintainer interpolationQualityForThisScope(*this, imagePaintingOptions.m_interpolationQuality);
>+        result = image.draw(*this, destination, source, imagePaintingOptions.m_compositeOperator, imagePaintingOptions.m_blendMode, imagePaintingOptions.m_decodingMode, imagePaintingOptions.m_orientationDescription);
>+    }
> 
>-    InterpolationQualityMaintainer interpolationQualityForThisScope(*this, imagePaintingOptions.m_interpolationQuality);
>-    return image.draw(*this, destination, source, imagePaintingOptions.m_compositeOperator, imagePaintingOptions.m_blendMode, imagePaintingOptions.m_decodingMode, imagePaintingOptions.m_orientationDescription);
>+    if (result == ImageDrawResult::DidRequestDecoding && image.imageObserver()) {
>+        ASSERT(imagePaintingOptions.m_client);
>+        image.imageObserver()->addClientWaitingForAsyncDecoding(*imagePaintingOptions.m_client);
>+    }
>+
>+    return result;
> }
> 
> ImageDrawResult GraphicsContext::drawTiledImage(Image& image, const FloatRect& destination, const FloatPoint& source, const FloatSize& tileSize, const FloatSize& spacing, const ImagePaintingOptions& imagePaintingOptions)
> {
>+    ImageDrawResult result = ImageDrawResult::DidNothing;
>     if (paintingDisabled())
>-        return ImageDrawResult::DidNothing;
>+        return result;
> 
>     if (m_impl)
>-        return m_impl->drawTiledImage(image, destination, source, tileSize, spacing, imagePaintingOptions);
>+        result = m_impl->drawTiledImage(image, destination, source, tileSize, spacing, imagePaintingOptions);
>+    else {
>+        InterpolationQualityMaintainer interpolationQualityForThisScope(*this, imagePaintingOptions.m_interpolationQuality);
>+        result = image.drawTiled(*this, destination, source, tileSize, spacing, imagePaintingOptions.m_compositeOperator, imagePaintingOptions.m_blendMode, imagePaintingOptions.m_decodingMode);
>+    }
> 
>-    InterpolationQualityMaintainer interpolationQualityForThisScope(*this, imagePaintingOptions.m_interpolationQuality);
>-    return image.drawTiled(*this, destination, source, tileSize, spacing, imagePaintingOptions.m_compositeOperator, imagePaintingOptions.m_blendMode, imagePaintingOptions.m_decodingMode);
>+    if (result == ImageDrawResult::DidRequestDecoding && image.imageObserver()) {
>+        ASSERT(imagePaintingOptions.m_client);
>+        image.imageObserver()->addClientWaitingForAsyncDecoding(*imagePaintingOptions.m_client);
>+    }
>+
>+    return result;
> }
> 
> ImageDrawResult GraphicsContext::drawTiledImage(Image& image, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor,
>     Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions& imagePaintingOptions)
> {
>+    // Just do a scale.
>+    if (hRule == Image::StretchTile && vRule == Image::StretchTile)
>+        return drawImage(image, destination, source, imagePaintingOptions);
>+
>+    ImageDrawResult result = ImageDrawResult::DidNothing;
>     if (paintingDisabled())
>-        return ImageDrawResult::DidNothing;
>+        return result;
> 
>     if (m_impl)
>-        return m_impl->drawTiledImage(image, destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions);
>-
>-    if (hRule == Image::StretchTile && vRule == Image::StretchTile) {
>-        // Just do a scale.
>-        return drawImage(image, destination, source, imagePaintingOptions);
>+        result = m_impl->drawTiledImage(image, destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions);
>+    else {
>+        InterpolationQualityMaintainer interpolationQualityForThisScope(*this, imagePaintingOptions.m_interpolationQuality);
>+        result = image.drawTiled(*this, destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions.m_compositeOperator);
>     }
>-
>-    InterpolationQualityMaintainer interpolationQualityForThisScope(*this, imagePaintingOptions.m_interpolationQuality);
>-    return image.drawTiled(*this, destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions.m_compositeOperator);
>+    
>+    if (result == ImageDrawResult::DidRequestDecoding && image.imageObserver()) {
>+        ASSERT(imagePaintingOptions.m_client);
>+        image.imageObserver()->addClientWaitingForAsyncDecoding(*imagePaintingOptions.m_client);
>+    }
>+    
>+    return result;
> }
> 
> void GraphicsContext::drawImageBuffer(ImageBuffer& image, const FloatPoint& destination, const ImagePaintingOptions& imagePaintingOptions)
>@@ -797,6 +827,17 @@ void GraphicsContext::drawConsumingImageBuffer(std::unique_ptr<ImageBuffer> imag
>     ImageBuffer::drawConsuming(WTFMove(image), *this, destination, source, imagePaintingOptions.m_compositeOperator, imagePaintingOptions.m_blendMode);
> }
> 
>+void GraphicsContext::clip(const FloatRect& rect)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl)
>+        m_impl->clip(rect);
>+    else
>+        platformClip(rect);
>+}
>+    
> void GraphicsContext::clipRoundedRect(const FloatRoundedRect& rect)
> {
>     if (paintingDisabled())
>@@ -829,6 +870,50 @@ IntRect GraphicsContext::clipBounds() const
>     return IntRect();
> }
> #endif
>+    
>+void GraphicsContext::clipOut(const FloatRect& rect)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl)
>+        m_impl->clipOut(rect);
>+    else
>+        platformClipOut(rect);
>+}
>+
>+void GraphicsContext::clipOut(const Path& path)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl)
>+        m_impl->clipOut(path);
>+    else
>+        platformClipOut(path);
>+}
>+
>+void GraphicsContext::clipPath(const Path& path, WindRule clipRule)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl)
>+        m_impl->clipPath(path, clipRule);
>+    else
>+        platformClipPath(path, clipRule);
>+}
>+
>+void GraphicsContext::clipToImageBuffer(const NativeImagePtr& image, const FloatRect& destRect, const FloatSize& bufferDestinationSize)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl)
>+        m_impl->clipToImageBuffer(image, destRect, bufferDestinationSize);
>+    else
>+        platformClipToImageBuffer(image, destRect, bufferDestinationSize);
>+}
> 
> void GraphicsContext::setTextDrawingMode(TextDrawingModeFlags mode)
> {
>@@ -843,6 +928,50 @@ void GraphicsContext::setTextDrawingMode(TextDrawingModeFlags mode)
>     setPlatformTextDrawingMode(mode);
> }
> 
>+void GraphicsContext::drawIcon(Icon& icon, const FloatRect& rect)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl)
>+        m_impl->drawIcon(icon, rect);
>+    else
>+        icon.platformPaint(*this, rect);
>+}
>+
>+void GraphicsContext::drawWidget(Widget& widget, const IntRect& rect)
>+{
>+    if (paintingDisabled())
>+        return;
>+    
>+    if (m_impl)
>+        m_impl->drawWidget(widget, rect);
>+    else
>+        widget.platformPaint(*this, rect);
>+}
>+
>+void GraphicsContext::drawScrollbar(Scrollbar& scrollbar, const IntRect& rect)
>+{
>+    if (paintingDisabled())
>+        return;
>+    
>+    if (m_impl)
>+        m_impl->drawScrollbar(scrollbar, rect);
>+    else
>+        scrollbar.platformPaint(*this, rect);
>+}
>+
>+void GraphicsContext::drawTheme(Theme& theme, ControlPart part, ControlStates& states, const FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl)
>+        m_impl->drawTheme(theme, part, states, zoomedRect, zoomFactor, scrollView, deviceScaleFactor, pageScaleFactor, useSystemAppearance, useDarkAppearance);
>+    else
>+        theme.platformPaint(*this, part, states, zoomedRect, zoomFactor, scrollView, deviceScaleFactor, pageScaleFactor, useSystemAppearance, useDarkAppearance);
>+}
>+
> void GraphicsContext::fillRect(const FloatRect& rect, Gradient& gradient)
> {
>     if (paintingDisabled())
>@@ -1129,6 +1258,11 @@ void GraphicsContext::applyState(const GraphicsContextState& state)
>     setPlatformShouldAntialias(state.shouldAntialias);
>     setPlatformShouldSmoothFonts(state.shouldSmoothFonts);
> }
>+    
>+void GraphicsContext::applyStateChange(const GraphicsContextStateChange& state)
>+{
>+    state.apply(*this);
>+}
> 
> float GraphicsContext::dashedLineCornerWidthForStrokeWidth(float strokeWidth) const
> {
>diff --git a/Source/WebCore/platform/graphics/GraphicsContext.h b/Source/WebCore/platform/graphics/GraphicsContext.h
>index ccc2d03e7eaf1fbbec2a121f583594b69014e12c..3f1cdc4725ddd54d19471bec41ce0e5dd7f4881f 100644
>--- a/Source/WebCore/platform/graphics/GraphicsContext.h
>+++ b/Source/WebCore/platform/graphics/GraphicsContext.h
>@@ -26,6 +26,7 @@
> 
> #pragma once
> 
>+#include "ControlStates.h"
> #include "DashArray.h"
> #include "FloatRect.h"
> #include "FontCascade.h"
>@@ -34,6 +35,7 @@
> #include "Image.h"
> #include "ImageOrientation.h"
> #include "Pattern.h"
>+#include "ThemeTypes.h"
> #include <wtf/Function.h>
> #include <wtf/Noncopyable.h>
> 
>@@ -78,18 +80,23 @@ const int cMisspellingLinePatternWidth = 4;
> const int cMisspellingLinePatternGapWidth = 1;
> 
> class AffineTransform;
>+class CachedImageClient;
> class FloatRoundedRect;
> class Gradient;
>+class GraphicsContext3D;
> class GraphicsContextImpl;
> class GraphicsContextPlatformPrivate;
>+class Icon;
> class ImageBuffer;
> class IntRect;
>-class RoundedRect;
>-class URL;
>-class GraphicsContext3D;
> class Path;
>+class RoundedRect;
>+class Scrollbar;
> class TextRun;
>+class Theme;
> class TransformationMatrix;
>+class URL;
>+class Widget;
> 
> enum TextDrawingMode {
>     TextModeFill = 1 << 0,
>@@ -116,6 +123,12 @@ enum class DocumentMarkerLineStyle : uint8_t {
>     AutocorrectionReplacement,
>     DictationAlternatives
> };
>+    
>+inline WTF::TextStream& operator<<(WTF::TextStream& ts, const DocumentMarkerLineStyle&)
>+{
>+    // FIXME: dump the ImagePaintingOptions to the TextStream.
>+    return ts;
>+}
> 
> namespace DisplayList {
> class Recorder;
>@@ -198,28 +211,31 @@ struct GraphicsContextState {
> };
> 
> struct ImagePaintingOptions {
>-    ImagePaintingOptions(CompositeOperator compositeOperator = CompositeSourceOver, BlendMode blendMode = BlendModeNormal, DecodingMode decodingMode = DecodingMode::Synchronous, ImageOrientationDescription orientationDescription = ImageOrientationDescription(), InterpolationQuality interpolationQuality = InterpolationDefault)
>+    ImagePaintingOptions(CompositeOperator compositeOperator = CompositeSourceOver, BlendMode blendMode = BlendModeNormal, DecodingMode decodingMode = DecodingMode::Synchronous, CachedImageClient* client = nullptr, ImageOrientationDescription orientationDescription = ImageOrientationDescription(), InterpolationQuality interpolationQuality = InterpolationDefault)
>         : m_compositeOperator(compositeOperator)
>         , m_blendMode(blendMode)
>         , m_decodingMode(decodingMode)
>+        , m_client(client)
>         , m_orientationDescription(orientationDescription)
>         , m_interpolationQuality(interpolationQuality)
>     {
>     }
> 
>-    ImagePaintingOptions(ImageOrientationDescription orientationDescription, InterpolationQuality interpolationQuality = InterpolationDefault, CompositeOperator compositeOperator = CompositeSourceOver, BlendMode blendMode = BlendModeNormal, DecodingMode decodingMode = DecodingMode::Synchronous)
>+    ImagePaintingOptions(ImageOrientationDescription orientationDescription, InterpolationQuality interpolationQuality = InterpolationDefault, CompositeOperator compositeOperator = CompositeSourceOver, BlendMode blendMode = BlendModeNormal, DecodingMode decodingMode = DecodingMode::Synchronous, CachedImageClient* client = nullptr)
>         : m_compositeOperator(compositeOperator)
>         , m_blendMode(blendMode)
>         , m_decodingMode(decodingMode)
>+        , m_client(client)
>         , m_orientationDescription(orientationDescription)
>         , m_interpolationQuality(interpolationQuality)
>     {
>     }
> 
>-    ImagePaintingOptions(InterpolationQuality interpolationQuality, ImageOrientationDescription orientationDescription = ImageOrientationDescription(), CompositeOperator compositeOperator = CompositeSourceOver, BlendMode blendMode = BlendModeNormal, DecodingMode decodingMode = DecodingMode::Synchronous)
>+    ImagePaintingOptions(InterpolationQuality interpolationQuality, ImageOrientationDescription orientationDescription = ImageOrientationDescription(), CompositeOperator compositeOperator = CompositeSourceOver, BlendMode blendMode = BlendModeNormal, DecodingMode decodingMode = DecodingMode::Synchronous, CachedImageClient* client = nullptr)
>         : m_compositeOperator(compositeOperator)
>         , m_blendMode(blendMode)
>         , m_decodingMode(decodingMode)
>+        , m_client(client)
>         , m_orientationDescription(orientationDescription)
>         , m_interpolationQuality(interpolationQuality)
>     {
>@@ -230,9 +246,16 @@ struct ImagePaintingOptions {
>     CompositeOperator m_compositeOperator;
>     BlendMode m_blendMode;
>     DecodingMode m_decodingMode;
>+    CachedImageClient* m_client;
>     ImageOrientationDescription m_orientationDescription;
>     InterpolationQuality m_interpolationQuality;
> };
>+    
>+inline WTF::TextStream& operator<<(WTF::TextStream& ts, const ImagePaintingOptions&)
>+{
>+    // FIXME: dump the ImagePaintingOptions to the TextStream.
>+    return ts;
>+}
> 
> struct GraphicsContextStateChange {
>     GraphicsContextStateChange() = default;
>@@ -255,7 +278,6 @@ struct GraphicsContextStateChange {
> 
> WTF::TextStream& operator<<(WTF::TextStream&, const GraphicsContextStateChange&);
> 
>-
> class GraphicsContext {
>     WTF_MAKE_NONCOPYABLE(GraphicsContext); WTF_MAKE_FAST_ALLOCATED;
> public:
>@@ -327,6 +349,7 @@ public:
> 
> #if USE(CG) || USE(DIRECT2D) || USE(CAIRO)
>     WEBCORE_EXPORT void drawNativeImage(const NativeImagePtr&, const FloatSize& selfSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator = CompositeSourceOver, BlendMode = BlendModeNormal, ImageOrientation = ImageOrientation());
>+    WEBCORE_EXPORT void drawNativeScaledImage(const NativeImagePtr&, float scaleFactor, const IntPoint& destination, const IntRect& source);
> #endif
> 
> #if USE(CG) || USE(DIRECT2D)
>@@ -397,9 +420,10 @@ public:
>     void clipRoundedRect(const FloatRoundedRect&);
> 
>     void clipOut(const FloatRect&);
>+    void clipOut(const Path&);
>     void clipOutRoundedRect(const FloatRoundedRect&);
>     void clipPath(const Path&, WindRule = WindRule::EvenOdd);
>-    void clipToImageBuffer(ImageBuffer&, const FloatRect&);
>+    void clipToImageBuffer(const NativeImagePtr&, const FloatRect&, const FloatSize&);
>     
>     IntRect clipBounds() const;
> 
>@@ -412,6 +436,7 @@ public:
>     void drawBidiText(const FontCascade&, const TextRun&, const FloatPoint&, FontCascade::CustomFontNotReadyAction = FontCascade::DoNotPaintIfFontNotReady);
> 
>     void applyState(const GraphicsContextState&);
>+    void applyStateChange(const GraphicsContextStateChange&);
> 
>     enum RoundingMode {
>         RoundAllSides,
>@@ -448,6 +473,11 @@ public:
>     void drawFocusRing(const Vector<FloatRect>&, double timeOffset, bool& needsRedraw, const Color&);
> #endif
> 
>+    void drawIcon(Icon&, const FloatRect&);
>+    void drawWidget(Widget&, const IntRect&);
>+    void drawScrollbar(Scrollbar&, const IntRect&);
>+    void drawTheme(Theme&, ControlPart, ControlStates&, const FloatRect& zoomedRect, float zoomFactor, void*, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance);
>+
>     void setLineCap(LineCap);
>     void setLineDash(const DashArray&, float dashOffset);
>     void setLineJoin(LineJoin);
>@@ -467,7 +497,6 @@ public:
>     // implementations to handle clipping on the canvas differently since
>     // the discipline is different.
>     void canvasClip(const Path&, WindRule = WindRule::EvenOdd);
>-    void clipOut(const Path&);
> 
>     void scale(float s)
>     {
>@@ -628,6 +657,12 @@ private:
> 
>     void platformFillRoundedRect(const FloatRoundedRect&, const Color&);
> 
>+    void platformClip(const FloatRect&);
>+    void platformClipOut(const FloatRect&);
>+    void platformClipOut(const Path&);
>+    void platformClipPath(const Path&, WindRule);
>+    void platformClipToImageBuffer(const NativeImagePtr&, const FloatRect&, const FloatSize&);
>+
>     FloatRect computeLineBoundsAndAntialiasingModeForText(const FloatPoint&, float width, bool printing, Color&);
> 
>     float dashedLineCornerWidthForStrokeWidth(float) const;
>diff --git a/Source/WebCore/platform/graphics/GraphicsContextImpl.h b/Source/WebCore/platform/graphics/GraphicsContextImpl.h
>index 6bcf768adfd89ee0b196a3ea62ee0680c8ad18ee..4e248a0bbb334acc803ca67266c208647f33e05e 100644
>--- a/Source/WebCore/platform/graphics/GraphicsContextImpl.h
>+++ b/Source/WebCore/platform/graphics/GraphicsContextImpl.h
>@@ -73,18 +73,26 @@ public:
>     virtual ImageDrawResult drawTiledImage(Image&, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions&) = 0;
> #if USE(CG) || USE(CAIRO)
>     virtual void drawNativeImage(const NativeImagePtr&, const FloatSize& selfSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator, BlendMode, ImageOrientation) = 0;
>+    virtual void drawNativeScaledImage(const NativeImagePtr&, float scaleFactor, const IntPoint& destination, const IntRect& source) = 0;
> #endif
>     virtual void drawPattern(Image&, const FloatRect& destRect, const FloatRect& srcRect, const AffineTransform&, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator, BlendMode = BlendModeNormal) = 0;
> 
>     virtual void drawRect(const FloatRect&, float borderThickness) = 0;
>     virtual void drawLine(const FloatPoint&, const FloatPoint&) = 0;
>-    virtual void drawLinesForText(const FloatPoint&, const DashArray& widths, bool printing, bool doubleLines, float strokeThickness) = 0;
>+    virtual void drawLinesForText(const FloatPoint&, const DashArray& widths, bool printing, bool doubleLines, StrokeStyle) = 0;
>     virtual void drawLineForDocumentMarker(const FloatPoint&, float width, DocumentMarkerLineStyle) = 0;
>     virtual void drawEllipse(const FloatRect&) = 0;
>+#if USE(CG)
>     virtual void drawPath(const Path&) = 0;
>+#endif
> 
>     virtual void drawFocusRing(const Path&, float width, float offset, const Color&) = 0;
>     virtual void drawFocusRing(const Vector<FloatRect>&, float width, float offset, const Color&) = 0;
>+    
>+    virtual void drawIcon(Icon&, const FloatRect&) = 0;
>+    virtual void drawWidget(Widget&, const IntRect&) = 0;
>+    virtual void drawScrollbar(Scrollbar&, const IntRect&) = 0;
>+    virtual void drawTheme(Theme&, ControlPart, ControlStates&, const FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance) = 0;
> 
>     virtual void save() = 0;
>     virtual void restore() = 0;
>@@ -104,7 +112,7 @@ public:
>     virtual void clipOut(const Path&) = 0;
>     virtual void clipPath(const Path&, WindRule) = 0;
>     virtual IntRect clipBounds() = 0;
>-    virtual void clipToImageBuffer(ImageBuffer&, const FloatRect&) = 0;
>+    virtual void clipToImageBuffer(const NativeImagePtr&, const FloatRect& destRect, const FloatSize& bufferDestinationSize) = 0;
>     
>     virtual void applyDeviceScaleFactor(float) = 0;
> 
>diff --git a/Source/WebCore/platform/graphics/Icon.h b/Source/WebCore/platform/graphics/Icon.h
>index 860ea696feb485baba34fefc041d2ec388734b83..e25ca88ec8461ac0605a6d2675aaac5cc8acffbd 100644
>--- a/Source/WebCore/platform/graphics/Icon.h
>+++ b/Source/WebCore/platform/graphics/Icon.h
>@@ -1,5 +1,5 @@
> /*
>- * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
>+ * Copyright (C) 2006-2018 Apple Inc. All rights reserved.
>  *
>  * This library is free software; you can redistribute it and/or
>  * modify it under the terms of the GNU Library General Public
>@@ -21,10 +21,12 @@
> #ifndef Icon_h
> #define Icon_h
> 
>+#include "GraphicsContext.h"
> #include <wtf/Forward.h>
> #include <wtf/RefCounted.h>
> #include <wtf/RefPtr.h>
> #include <wtf/RetainPtr.h>
>+#include <wtf/text/TextStream.h>
> 
> #if PLATFORM(IOS)
> #include "NativeImage.h"
>@@ -48,7 +50,12 @@ public:
> 
>     WEBCORE_EXPORT ~Icon();
> 
>-    void paint(GraphicsContext&, const FloatRect&);
>+    void paint(GraphicsContext& context, const FloatRect& rect)
>+    {
>+        context.drawIcon(*this, rect);
>+    }
>+
>+    void platformPaint(GraphicsContext&, const FloatRect&) const;
> 
> #if PLATFORM(WIN)
>     static RefPtr<Icon> create(HICON hIcon) { return adoptRef(new Icon(hIcon)); }
>@@ -79,6 +86,12 @@ private:
>     GdkPixbuf* m_icon;
> #endif
> };
>+    
>+inline TextStream& operator<<(TextStream& ts, const Icon&)
>+{
>+    // FIXME: dump the Icon members to the TextStream.
>+    return ts;
>+}
> 
> }
> 
>diff --git a/Source/WebCore/platform/graphics/ImageBuffer.h b/Source/WebCore/platform/graphics/ImageBuffer.h
>index 987580e6bdc39123770921c57e7dc7dabd74a165..c7e5b8d1b11e0ba26c3b28f816e0b74733dc49b3 100644
>--- a/Source/WebCore/platform/graphics/ImageBuffer.h
>+++ b/Source/WebCore/platform/graphics/ImageBuffer.h
>@@ -134,10 +134,10 @@ public:
>     static FloatRect clampedRect(const FloatRect&);
> 
> private:
>-#if USE(CG)
>     // The returned image might be larger than the internalSize(). If you want the smaller
>     // image, crop the result.
>-    RetainPtr<CGImageRef> copyNativeImage(BackingStoreCopy = CopyBackingStore) const;
>+    NativeImagePtr copyNativeImage(BackingStoreCopy = CopyBackingStore) const;
>+#if USE(CG)
>     static RetainPtr<CGImageRef> sinkIntoNativeImage(std::unique_ptr<ImageBuffer>);
>     void flushContext() const;
> #elif USE(DIRECT2D)
>@@ -156,6 +156,9 @@ private:
>     friend class CrossfadeGeneratedImage;
>     friend class NamedImageGeneratedImage;
>     friend class GradientImage;
>+    friend class CanvasRenderingContext2D;
>+    friend class ShadowBlur;
>+    friend class SVGRenderingContext;
> 
> private:
>     ImageBufferData m_data;
>diff --git a/Source/WebCore/platform/graphics/ImageObserver.h b/Source/WebCore/platform/graphics/ImageObserver.h
>index 8269cc4edc37ce5f4dc165fbd4d61c3698a427fe..a026b3394e565da32e3fc7b76965c25dc036f575 100644
>--- a/Source/WebCore/platform/graphics/ImageObserver.h
>+++ b/Source/WebCore/platform/graphics/ImageObserver.h
>@@ -30,6 +30,7 @@
> 
> namespace WebCore {
> 
>+class CachedImageClient;
> class Image;
> class IntRect;
> class URL;
>@@ -48,6 +49,7 @@ public:
> 
>     virtual void didDraw(const Image&) = 0;
> 
>+    virtual void addClientWaitingForAsyncDecoding(CachedImageClient&) = 0;
>     virtual bool canDestroyDecodedData(const Image&) = 0;
>     virtual void imageFrameAvailable(const Image&, ImageAnimatingState, const IntRect* changeRect = nullptr, DecodingStatus = DecodingStatus::Invalid) = 0;
>     virtual void changedInRect(const Image&, const IntRect* changeRect = nullptr) = 0;
>diff --git a/Source/WebCore/platform/graphics/ShadowBlur.cpp b/Source/WebCore/platform/graphics/ShadowBlur.cpp
>index fe049a4b8e6703d61bc1adb5006885fcc7ed3fa5..dbd4c73187b7d2ac1df369a1b923f543495c9aec 100644
>--- a/Source/WebCore/platform/graphics/ShadowBlur.cpp
>+++ b/Source/WebCore/platform/graphics/ShadowBlur.cpp
>@@ -457,7 +457,7 @@ void ShadowBlur::drawShadowBuffer(GraphicsContext& graphicsContext)
>         // but we may not have cleared it all, so clip to the filled part first.
>         graphicsContext.clip(FloatRect(m_layerOrigin, m_layerSize));
>     }
>-    graphicsContext.clipToImageBuffer(*m_layerImage, FloatRect(m_layerOrigin, bufferSize));
>+    graphicsContext.clipToImageBuffer(m_layerImage->copyNativeImage(DontCopyBackingStore), FloatRect(m_layerOrigin, bufferSize), m_layerImage->sizeForDestinationSize(bufferSize));
>     graphicsContext.setFillColor(m_color);
> 
>     graphicsContext.clearShadow();
>diff --git a/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp b/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp
>index 8cfb1e92257e43252706aea545b426394fe99fd6..fef25a657dfdec48badf4e2ee9beb8d16f03a7da 100644
>--- a/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp
>+++ b/Source/WebCore/platform/graphics/cairo/GraphicsContextCairo.cpp
>@@ -133,6 +133,20 @@ void GraphicsContext::drawNativeImage(const NativeImagePtr& image, const FloatSi
>     auto& state = this->state();
>     Cairo::drawNativeImage(*platformContext(), image.get(), destRect, srcRect, compositeOperator, blendMode, orientation, state.imageInterpolationQuality, state.alpha, Cairo::ShadowState(state));
> }
>+    
>+void GraphicsContext::drawNativeScaledImage(const NativeImagePtr& image, float scaleFactor, const IntPoint& destination, const IntRect& source)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl) {
>+        m_impl->drawNativeScaledImage(image, scaleFactor, destination, source);
>+        return;
>+    }
>+
>+    ASSERT(hasPlatformContext());
>+    notImplemented();
>+}
> 
> // This is only used to draw borders, so we should not draw shadows.
> void GraphicsContext::drawLine(const FloatPoint& point1, const FloatPoint& point2)
>@@ -228,51 +242,27 @@ void GraphicsContext::fillRect(const FloatRect& rect, const Color& color)
>     Cairo::fillRect(*platformContext(), rect, color, Cairo::ShadowState(state()));
> }
> 
>-void GraphicsContext::clip(const FloatRect& rect)
>+void GraphicsContext::platformClip(const FloatRect& rect)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clip(rect);
>-        return;
>-    }
>-
>+    ASSERT(!paintingDisabled());
>     ASSERT(hasPlatformContext());
>     Cairo::clip(*platformContext(), rect);
> }
> 
>-void GraphicsContext::clipPath(const Path& path, WindRule clipRule)
>+void GraphicsContext::platformClipPath(const Path& path, WindRule clipRule)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clipPath(path, clipRule);
>-        return;
>-    }
>-
>+    ASSERT(!paintingDisabled());
>     ASSERT(hasPlatformContext());
>     Cairo::clipPath(*platformContext(), path, clipRule);
> }
> 
>-void GraphicsContext::clipToImageBuffer(ImageBuffer& buffer, const FloatRect& destRect)
>+void GraphicsContext::platformClipToImageBuffer(const NativeImagePtr& image, const FloatRect& destRect, const FloatSize&)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clipToImageBuffer(buffer, destRect);
>-        return;
>-    }
>-
>-    RefPtr<Image> image = buffer.copyImage(DontCopyBackingStore);
>+    ASSERT(!paintingDisabled());
>+    ASSERT(hasPlatformContext());
>     if (!image)
>         return;
>-
>-    ASSERT(hasPlatformContext());
>-    if (auto surface = image->nativeImageForCurrentFrame())
>-        Cairo::clipToImageBuffer(*platformContext(), surface.get(), destRect);
>+    Cairo::clipToImageBuffer(*platformContext(), image.get(), destRect);
> }
> 
> IntRect GraphicsContext::clipBounds() const
>@@ -320,7 +310,7 @@ void GraphicsContext::drawLineForText(const FloatPoint& origin, float width, boo
>     drawLinesForText(origin, DashArray { width, 0 }, printing, doubleUnderlines);
> }
> 
>-void GraphicsContext::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleUnderlines, StrokeStyle)
>+void GraphicsContext::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleUnderlines, StrokeStyle strokeStyle)
> {
>     if (paintingDisabled())
>         return;
>@@ -329,7 +319,7 @@ void GraphicsContext::drawLinesForText(const FloatPoint& point, const DashArray&
>         return;
> 
>     if (m_impl) {
>-        m_impl->drawLinesForText(point, widths, printing, doubleUnderlines, strokeThickness());
>+        m_impl->drawLinesForText(point, widths, printing, doubleUnderlines, strokeStyle);
>         return;
>     }
> 
>@@ -584,16 +574,9 @@ void GraphicsContext::canvasClip(const Path& path, WindRule windRule)
>     clipPath(path, windRule);
> }
> 
>-void GraphicsContext::clipOut(const Path& path)
>+void GraphicsContext::platformClipOut(const Path& path)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clipOut(path);
>-        return;
>-    }
>-
>+    ASSERT(!paintingDisabled());
>     ASSERT(hasPlatformContext());
>     Cairo::clipOut(*platformContext(), path);
> }
>@@ -626,16 +609,9 @@ void GraphicsContext::scale(const FloatSize& size)
>     Cairo::scale(*platformContext(), size);
> }
> 
>-void GraphicsContext::clipOut(const FloatRect& rect)
>+void GraphicsContext::platformClipOut(const FloatRect& rect)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clipOut(rect);
>-        return;
>-    }
>-
>+    ASSERT(!paintingDisabled());
>     ASSERT(hasPlatformContext());
>     Cairo::clipOut(*platformContext(), rect);
> }
>diff --git a/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.cpp b/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.cpp
>index e06e4031d879d190369aac83876804984c65a7cd..25b561232769fe9c953fd9baadce96967e0f5b10 100644
>--- a/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.cpp
>+++ b/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.cpp
>@@ -276,6 +276,11 @@ void GraphicsContextImplCairo::drawNativeImage(const NativeImagePtr& image, cons
>     Cairo::drawNativeImage(m_platformContext, image.get(), destRect, srcRect, compositeOperator, blendMode, orientation, state.imageInterpolationQuality, state.alpha, Cairo::ShadowState(state));
> }
> 
>+void GraphicsContextImplCairo::drawNativeScaledImage(const NativeImagePtr&, float, const IntPoint&, const IntRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+
> void GraphicsContextImplCairo::drawPattern(Image& image, const FloatRect& destRect, const FloatRect& tileRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize&, CompositeOperator compositeOperator, BlendMode blendMode)
> {
>     if (auto surface = image.nativeImageForCurrentFrame())
>@@ -294,9 +299,9 @@ void GraphicsContextImplCairo::drawLine(const FloatPoint& point1, const FloatPoi
>     Cairo::drawLine(m_platformContext, point1, point2, state.strokeStyle, state.strokeColor, state.strokeThickness, state.shouldAntialias);
> }
> 
>-void GraphicsContextImplCairo::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleUnderlines, float strokeThickness)
>+void GraphicsContextImplCairo::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleUnderlines, StrokeStyle strokeStyle)
> {
>-    UNUSED_PARAM(strokeThickness);
>+    UNUSED_PARAM(strokeStyle);
>     auto& state = graphicsContext().state();
>     Cairo::drawLinesForText(m_platformContext, point, widths, printing, doubleUnderlines, state.strokeColor, state.strokeThickness);
> }
>@@ -312,10 +317,6 @@ void GraphicsContextImplCairo::drawEllipse(const FloatRect& rect)
>     Cairo::drawEllipse(*platformContext(), rect, state.fillColor, state.strokeStyle, state.strokeColor, state.strokeThickness);
> }
> 
>-void GraphicsContextImplCairo::drawPath(const Path&)
>-{
>-}
>-
> void GraphicsContextImplCairo::drawFocusRing(const Path& path, float width, float offset, const Color& color)
> {
>     UNUSED_PARAM(offset);
>@@ -327,6 +328,26 @@ void GraphicsContextImplCairo::drawFocusRing(const Vector<FloatRect>& rects, flo
>     UNUSED_PARAM(offset);
>     Cairo::drawFocusRing(m_platformContext, rects, width, color);
> }
>+    
>+void GraphicsContextImplCairo::drawIcon(Icon&, const FloatRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+    
>+void GraphicsContextImplCairo::drawWidget(Widget&, const IntRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+    
>+void GraphicsContextImplCairo::drawScrollbar(Scrollbar&, const IntRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+    
>+void GraphicsContextImplCairo::drawTheme(Theme&, ControlPart, ControlStates&, const FloatRect&, float, void*, float, float, bool, bool)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
> 
> void GraphicsContextImplCairo::save()
> {
>@@ -403,14 +424,11 @@ IntRect GraphicsContextImplCairo::clipBounds()
>     return Cairo::State::getClipBounds(m_platformContext);
> }
> 
>-void GraphicsContextImplCairo::clipToImageBuffer(ImageBuffer& buffer, const FloatRect& destRect)
>+void GraphicsContextImplCairo::clipToImageBuffer(const NativeImagePtr& image, const FloatRect& destRect, const FloatSize&)
> {
>-    RefPtr<Image> image = buffer.copyImage(DontCopyBackingStore);
>     if (!image)
>         return;
>-
>-    if (auto surface = image->nativeImageForCurrentFrame())
>-        Cairo::clipToImageBuffer(m_platformContext, surface.get(), destRect);
>+    Cairo::clipToImageBuffer(m_platformContext, image.get(), destRect);
> }
> 
> void GraphicsContextImplCairo::applyDeviceScaleFactor(float)
>diff --git a/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.h b/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.h
>index 997cbdda51c3f1c0c52d50fccea4e58595b8a79b..3713e51f31300969d7cd24d7aadbc7486b828e13 100644
>--- a/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.h
>+++ b/Source/WebCore/platform/graphics/cairo/GraphicsContextImplCairo.h
>@@ -75,18 +75,23 @@ public:
>     ImageDrawResult drawTiledImage(Image&, const FloatRect&, const FloatPoint&, const FloatSize&, const FloatSize&, const ImagePaintingOptions&) override;
>     ImageDrawResult drawTiledImage(Image&, const FloatRect&, const FloatRect&, const FloatSize&, Image::TileRule, Image::TileRule, const ImagePaintingOptions&) override;
>     void drawNativeImage(const NativeImagePtr&, const FloatSize&, const FloatRect&, const FloatRect&, CompositeOperator, BlendMode, ImageOrientation) override;
>+    void drawNativeScaledImage(const NativeImagePtr&, float, const IntPoint&, const IntRect&) override;
>     void drawPattern(Image&, const FloatRect&, const FloatRect&, const AffineTransform&, const FloatPoint&, const FloatSize&, CompositeOperator, BlendMode = BlendModeNormal) override;
> 
>     void drawRect(const FloatRect&, float) override;
>     void drawLine(const FloatPoint&, const FloatPoint&) override;
>-    void drawLinesForText(const FloatPoint&, const DashArray&, bool, bool, float) override;
>+    void drawLinesForText(const FloatPoint&, const DashArray&, bool, bool, StrokeStyle) override;
>     void drawLineForDocumentMarker(const FloatPoint&, float, DocumentMarkerLineStyle) override;
>     void drawEllipse(const FloatRect&) override;
>-    void drawPath(const Path&) override;
> 
>     void drawFocusRing(const Path&, float, float, const Color&) override;
>     void drawFocusRing(const Vector<FloatRect>&, float, float, const Color&) override;
> 
>+    void drawIcon(Icon&, const FloatRect&) override;
>+    void drawWidget(Widget&, const IntRect&) override;
>+    void drawScrollbar(Scrollbar&, const IntRect&) override;
>+    void drawTheme(Theme&, ControlPart, ControlStates&, const FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance) override;
>+
>     void save() override;
>     void restore() override;
> 
>@@ -105,7 +110,7 @@ public:
>     void clipOut(const Path&) override;
>     void clipPath(const Path&, WindRule) override;
>     IntRect clipBounds() override;
>-    void clipToImageBuffer(ImageBuffer&, const FloatRect&) override;
>+    void clipToImageBuffer(const NativeImagePtr&, const FloatRect& destRect, const FloatSize& bufferDestinationSize) override;
>     
>     void applyDeviceScaleFactor(float) override;
> 
>diff --git a/Source/WebCore/platform/graphics/cairo/ImageBufferCairo.cpp b/Source/WebCore/platform/graphics/cairo/ImageBufferCairo.cpp
>index 89a41f1f578aff6b72b69de24647fb5e74ef207e..f2ea18d6cfd12f0f6ee6d9c38590e5ac179e4cbd 100644
>--- a/Source/WebCore/platform/graphics/cairo/ImageBufferCairo.cpp
>+++ b/Source/WebCore/platform/graphics/cairo/ImageBufferCairo.cpp
>@@ -324,6 +324,12 @@ BackingStoreCopy ImageBuffer::fastCopyImageMode()
>     return DontCopyBackingStore;
> }
> 
>+NativeImagePtr ImageBuffer::copyNativeImage(BackingStoreCopy copyBehavior) const
>+{
>+    auto image = copyImage(copyBehavior);
>+    return image ? image->nativeImageForCurrentFrame() : nullptr;
>+}
>+
> void ImageBuffer::drawConsuming(std::unique_ptr<ImageBuffer> imageBuffer, GraphicsContext& destContext, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator op, BlendMode blendMode)
> {
>     imageBuffer->draw(destContext, destRect, srcRect, op, blendMode);
>diff --git a/Source/WebCore/platform/graphics/cg/GraphicsContextCG.cpp b/Source/WebCore/platform/graphics/cg/GraphicsContextCG.cpp
>index d29507178cb00e569df1b1c66b99fda79ad247cf..a2a18c948692b582e939d4b642ea78122b9a7f44 100644
>--- a/Source/WebCore/platform/graphics/cg/GraphicsContextCG.cpp
>+++ b/Source/WebCore/platform/graphics/cg/GraphicsContextCG.cpp
>@@ -393,6 +393,34 @@ void GraphicsContext::drawNativeImage(const RetainPtr<CGImageRef>& image, const
> 
>     LOG_WITH_STREAM(Images, stream << "GraphicsContext::drawNativeImage " << image.get() << " size " << imageSize << " into " << destRect << " took " << (MonotonicTime::now() - startTime).milliseconds() << "ms");
> }
>+    
>+void GraphicsContext::drawNativeScaledImage(const NativeImagePtr& image, float scaleFactor, const IntPoint& destination, const IntRect& source)
>+{
>+    if (paintingDisabled())
>+        return;
>+
>+    if (m_impl) {
>+        m_impl->drawNativeScaledImage(image, scaleFactor, destination, source);
>+        return;
>+    }
>+
>+    CGContextRef context = platformContext();
>+
>+    CGContextSaveGState(context);
>+
>+    CGContextClipToRect(context, CGRectMake(destination.x(), destination.y(), source.width(), source.height()));
>+    CGContextScaleCTM(context, 1, -1);
>+
>+    CGFloat imageHeight = CGImageGetHeight(image.get()) / scaleFactor;
>+    CGFloat imageWidth = CGImageGetWidth(image.get()) / scaleFactor;
>+
>+    CGFloat destX = destination.x() - source.x();
>+    CGFloat destY = -imageHeight - destination.y() + source.y();
>+
>+    CGContextDrawImage(context, CGRectMake(destX, destY, imageWidth, imageHeight), image.get());
>+
>+    CGContextRestoreGState(context);
>+}
> 
> static void drawPatternCallback(void* info, CGContextRef context)
> {
>@@ -498,14 +526,8 @@ void GraphicsContext::drawPattern(Image& image, const FloatRect& destRect, const
>     }
> }
> 
>-void GraphicsContext::clipToImageBuffer(ImageBuffer& buffer, const FloatRect& destRect)
>+void GraphicsContext::platformClipToImageBuffer(const NativeImagePtr& image, const FloatRect& destRect, const FloatSize& bufferDestinationSize)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    FloatSize bufferDestinationSize = buffer.sizeForDestinationSize(destRect.size());
>-    RetainPtr<CGImageRef> image = buffer.copyNativeImage(DontCopyBackingStore);
>-
>     CGContextRef context = platformContext();
>     // FIXME: This image needs to be grayscale to be used as an alpha mask here.
>     CGContextTranslateCTM(context, destRect.x(), destRect.y() + bufferDestinationSize.height());
>@@ -1057,29 +1079,17 @@ void GraphicsContext::fillRectWithRoundedHole(const FloatRect& rect, const Float
>     setFillColor(oldFillColor);
> }
> 
>-void GraphicsContext::clip(const FloatRect& rect)
>+void GraphicsContext::platformClip(const FloatRect& rect)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clip(rect);
>-        return;
>-    }
>+    ASSERT(!paintingDisabled());
> 
>     CGContextClipToRect(platformContext(), rect);
>     m_data->clip(rect);
> }
> 
>-void GraphicsContext::clipOut(const FloatRect& rect)
>+void GraphicsContext::platformClipOut(const FloatRect& rect)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clipOut(rect);
>-        return;
>-    }
>+    ASSERT(!paintingDisabled());
> 
>     // FIXME: Using CGRectInfinite is much faster than getting the clip bounding box. However, due
>     // to <rdar://problem/12584492>, CGRectInfinite can't be used with an accelerated context that
>@@ -1093,15 +1103,9 @@ void GraphicsContext::clipOut(const FloatRect& rect)
>     CGContextEOClip(platformContext());
> }
> 
>-void GraphicsContext::clipOut(const Path& path)
>+void GraphicsContext::platformClipOut(const Path& path)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clipOut(path);
>-        return;
>-    }
>+    ASSERT(!paintingDisabled());
> 
>     CGContextBeginPath(platformContext());
>     CGContextAddRect(platformContext(), CGContextGetClipBoundingBox(platformContext()));
>@@ -1110,15 +1114,9 @@ void GraphicsContext::clipOut(const Path& path)
>     CGContextEOClip(platformContext());
> }
> 
>-void GraphicsContext::clipPath(const Path& path, WindRule clipRule)
>+void GraphicsContext::platformClipPath(const Path& path, WindRule clipRule)
> {
>-    if (paintingDisabled())
>-        return;
>-
>-    if (m_impl) {
>-        m_impl->clipPath(path, clipRule);
>-        return;
>-    }
>+    ASSERT(!paintingDisabled());
> 
>     CGContextRef context = platformContext();
>     if (path.isEmpty())
>@@ -1587,7 +1585,7 @@ void GraphicsContext::drawLinesForText(const FloatPoint& point, const DashArray&
>         return;
> 
>     if (m_impl) {
>-        m_impl->drawLinesForText(point, widths, printing, doubleLines, strokeThickness());
>+        m_impl->drawLinesForText(point, widths, printing, doubleLines, strokeStyle);
>         return;
>     }
> 
>diff --git a/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp b/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp
>index 4216ba0b16c27225ffedaddf6fe768b1bc94cb1b..99bdfaa9df53fc1bd8dfc8b9873a15840d45c147 100644
>--- a/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp
>+++ b/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp
>@@ -308,9 +308,9 @@ RetainPtr<CGImageRef> ImageBuffer::sinkIntoNativeImage(std::unique_ptr<ImageBuff
> #endif
> }
> 
>-RetainPtr<CGImageRef> ImageBuffer::copyNativeImage(BackingStoreCopy copyBehavior) const
>+NativeImagePtr ImageBuffer::copyNativeImage(BackingStoreCopy copyBehavior) const
> {
>-    RetainPtr<CGImageRef> image;
>+    NativeImagePtr image;
>     if (!context().isAcceleratedContext()) {
>         switch (copyBehavior) {
>         case DontCopyBackingStore:
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayList.cpp b/Source/WebCore/platform/graphics/displaylists/DisplayList.cpp
>index a40f89f768854e804492b0c1a5c3a0fcb6de786f..a6be1dc2e67a98dd138770fdbf1e32a225d05efd 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayList.cpp
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayList.cpp
>@@ -114,8 +114,8 @@ void DisplayList::dump(TextStream& ts) const
> size_t DisplayList::sizeInBytes() const
> {
>     size_t result = 0;
>-    for (auto& ref : m_list)
>-        result += Item::sizeInBytes(ref);
>+    for (auto& item : m_list)
>+        result += item->sizeInBytes();
> 
>     return result;
> }
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayList.h b/Source/WebCore/platform/graphics/displaylists/DisplayList.h
>index d4437e3d41be122cc89065247c92226e781dc77b..f862b878b504a0d4e2ddb810ce8ffa862be04c50 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayList.h
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayList.h
>@@ -41,8 +41,6 @@ class GraphicsContext;
> 
> namespace DisplayList {
> 
>-class Item;
>-
> enum AsTextFlag {
>     None                            = 0,
>     IncludesPlatformOperations      = 1 << 0,
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayListItems.cpp b/Source/WebCore/platform/graphics/displaylists/DisplayListItems.cpp
>index 1fcee8b384373036d23f09112ab63e79695ec043..7343c7de45d4b8c8c53b85b575bbfb2a6ef8be4a 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayListItems.cpp
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayListItems.cpp
>@@ -1,5 +1,5 @@
> /*
>- * Copyright (C) 2015 Apple Inc. All rights reserved.
>+ * Copyright (C) 2015-2018 Apple Inc. All rights reserved.
>  *
>  * Redistribution and use in source and binary forms, with or without
>  * modification, are permitted provided that the following conditions
>@@ -26,1121 +26,92 @@
> #include "config.h"
> #include "DisplayListItems.h"
> 
>-#include "FontCascade.h"
>-#include <wtf/text/TextStream.h>
>-
> namespace WebCore {
> namespace DisplayList {
> 
>-// Should match RenderTheme::platformFocusRingWidth()
>-static const float platformFocusRingWidth = 3;
>-
>-#if !defined(NDEBUG) || !LOG_DISABLED
>-WTF::CString Item::description() const
>-{
>-    TextStream ts;
>-    ts << *this;
>-    return ts.release().utf8();
>-}
>-#endif
>-
>-size_t Item::sizeInBytes(const Item& item)
>-{
>-    switch (item.type()) {
>-    case ItemType::Save:
>-        return sizeof(downcast<Save>(item));
>-    case ItemType::Restore:
>-        return sizeof(downcast<Restore>(item));
>-    case ItemType::Translate:
>-        return sizeof(downcast<Translate>(item));
>-    case ItemType::Rotate:
>-        return sizeof(downcast<Rotate>(item));
>-    case ItemType::Scale:
>-        return sizeof(downcast<Scale>(item));
>-    case ItemType::ConcatenateCTM:
>-        return sizeof(downcast<ConcatenateCTM>(item));
>-    case ItemType::SetState:
>-        return sizeof(downcast<SetState>(item));
>-    case ItemType::SetLineCap:
>-        return sizeof(downcast<SetLineCap>(item));
>-    case ItemType::SetLineDash:
>-        return sizeof(downcast<SetLineDash>(item));
>-    case ItemType::SetLineJoin:
>-        return sizeof(downcast<SetLineJoin>(item));
>-    case ItemType::SetMiterLimit:
>-        return sizeof(downcast<SetMiterLimit>(item));
>-    case ItemType::ClearShadow:
>-        return sizeof(downcast<ClearShadow>(item));
>-    case ItemType::Clip:
>-        return sizeof(downcast<Clip>(item));
>-    case ItemType::ClipOut:
>-        return sizeof(downcast<ClipOut>(item));
>-    case ItemType::ClipOutToPath:
>-        return sizeof(downcast<ClipOutToPath>(item));
>-    case ItemType::ClipPath:
>-        return sizeof(downcast<ClipPath>(item));
>-    case ItemType::DrawGlyphs:
>-        return sizeof(downcast<DrawGlyphs>(item));
>-    case ItemType::DrawImage:
>-        return sizeof(downcast<DrawImage>(item));
>-    case ItemType::DrawTiledImage:
>-        return sizeof(downcast<DrawTiledImage>(item));
>-    case ItemType::DrawTiledScaledImage:
>-        return sizeof(downcast<DrawTiledScaledImage>(item));
>-#if USE(CG) || USE(CAIRO)
>-    case ItemType::DrawNativeImage:
>-        return sizeof(downcast<DrawNativeImage>(item));
>-#endif
>-    case ItemType::DrawPattern:
>-        return sizeof(downcast<DrawPattern>(item));
>-    case ItemType::DrawRect:
>-        return sizeof(downcast<DrawRect>(item));
>-    case ItemType::DrawLine:
>-        return sizeof(downcast<DrawLine>(item));
>-    case ItemType::DrawLinesForText:
>-        return sizeof(downcast<DrawLinesForText>(item));
>-    case ItemType::DrawLineForDocumentMarker:
>-        return sizeof(downcast<DrawLineForDocumentMarker>(item));
>-    case ItemType::DrawEllipse:
>-        return sizeof(downcast<DrawEllipse>(item));
>-    case ItemType::DrawPath:
>-        return sizeof(downcast<DrawPath>(item));
>-    case ItemType::DrawFocusRingPath:
>-        return sizeof(downcast<DrawFocusRingPath>(item));
>-    case ItemType::DrawFocusRingRects:
>-        return sizeof(downcast<DrawFocusRingRects>(item));
>-    case ItemType::FillRect:
>-        return sizeof(downcast<FillRect>(item));
>-    case ItemType::FillRectWithColor:
>-        return sizeof(downcast<FillRectWithColor>(item));
>-    case ItemType::FillRectWithGradient:
>-        return sizeof(downcast<FillRectWithGradient>(item));
>-    case ItemType::FillCompositedRect:
>-        return sizeof(downcast<FillCompositedRect>(item));
>-    case ItemType::FillRoundedRect:
>-        return sizeof(downcast<FillRoundedRect>(item));
>-    case ItemType::FillRectWithRoundedHole:
>-        return sizeof(downcast<FillRectWithRoundedHole>(item));
>-    case ItemType::FillPath:
>-        return sizeof(downcast<FillPath>(item));
>-    case ItemType::FillEllipse:
>-        return sizeof(downcast<FillEllipse>(item));
>-    case ItemType::StrokeRect:
>-        return sizeof(downcast<StrokeRect>(item));
>-    case ItemType::StrokePath:
>-        return sizeof(downcast<StrokePath>(item));
>-    case ItemType::StrokeEllipse:
>-        return sizeof(downcast<StrokeEllipse>(item));
>-    case ItemType::ClearRect:
>-        return sizeof(downcast<ClearRect>(item));
>-    case ItemType::BeginTransparencyLayer:
>-        return sizeof(downcast<BeginTransparencyLayer>(item));
>-    case ItemType::EndTransparencyLayer:
>-        return sizeof(downcast<EndTransparencyLayer>(item));
>-#if USE(CG)
>-    case ItemType::ApplyStrokePattern:
>-        return sizeof(downcast<ApplyStrokePattern>(item));
>-    case ItemType::ApplyFillPattern:
>-        return sizeof(downcast<ApplyFillPattern>(item));
>-#endif
>-    case ItemType::ApplyDeviceScaleFactor:
>-        return sizeof(downcast<ApplyDeviceScaleFactor>(item));
>-    }
>-    return 0;
>+using ItemDescriptor = struct {
>+    String name;
>+    Vector<String> argumentsNames;
>+};
>+
>+static const Vector<ItemDescriptor>& itemsDescriptors()
>+{
>+    static NeverDestroyed<Vector<ItemDescriptor>> itemsDescriptors = Vector<ItemDescriptor>({
>+        { "save", { } },
>+        { "restore", { } },
>+        { "set-state", { "state-change" } },
>+        { "translate", { "x", "y" } },
>+        { "rotate", { "angle" } },
>+        { "scale", { "size" } },
>+        { "concatenate-ctm", { "ctm" } },
>+        { "set-line-cap", { "line-cap" } },
>+        { "set-line-dash", { "dash-array", "dash-offset" } },
>+        { "set-line-join", { "line-join" } },
>+        { "set-miter-limit", { "mitre-limit" } },
>+        { "clear-shadow", { } },
>+        { "clip", { "rect" } },
>+        { "clip-out", { "rect" } },
>+        { "clip-out-to-path", { "path" } },
>+        { "clip-path", { "path", "wind-rule" } },
>+        { "clip-to-image-buffer", { "image", "dest-rect", "buffer-destination-size" } },
>+        { "apply-stroke-pattern", { } },
>+        { "apply-fill-pattern", { } },
>+        { "apply-device-scale-factor", { "scale-factor" } },
>+
>+        { "begin-transparency-layer", { "opacity" } },
>+        { "end-transparency-layer", { } },
>+        { "draw-glyphs", { "font", "glyph-buffer", "from", "num-glyphs", "point", "font-smoothing" } },
>+        { "draw-image", { "image", "dest-rect", "source-rect", "image-painting-options" } },
>+        { "draw-tiled-image", { "image", "dest-rect", "source-point", "tile-size", "spacing", "image-painting-options" } },
>+        { "draw-tiled-scaled-image", { "image", "dest-rect", "source-rect", "tile-scalefactor", "h-rule", "v-rule", "image-painting-options" } },
>+        { "draw-native-image", { "image", "self-size", "dest-rect", "source-rect", "composite-operator", "blend-mode", "image-orientation" } },
>+        { "draw-native-scaled-image", { "image", "scale-factor", "dest-point", "source-rect" } },
>+        { "draw-pattern", { "image", "dest-rect", "tile-rect", "pattern-transform", "phase", "spacing", "composite-operator", "blend-mode" } },
>+        { "draw-rect", { "rect", "border-thickness" } },
>+        { "draw-line", { "point-1", "point-2" } },
>+        { "draw-lines-for-text", { "point", "widths", "is-printing", "double-lines", "stroke-style" } },
>+        { "draw-line-for-document-marker", { "point", "width", "document-marker-line-style" } },
>+        { "draw-ellipse", { "rect" } },
>+        { "draw-path", { "path" } },
>+        { "draw-focus-ring-path", { "path", "width", "offset", "color" } },
>+        { "draw-focus-ring-rects", { "rects", "width", "offset", "color" } },
>+        { "draw-icon", { "icon", "rect" } },
>+        { "draw-widget", { "widget", "rect"} },
>+        { "draw-scrollbar", { "scrollbar", "rect" } },
>+        { "draw-theme", { "theme", "control-part", "control-states", "zoomed-rect", "zoom-factor", "scroll-view", "device-scale-factor", "page-scale-factor", "use-system-appearance", "use-dark-appearance" } },
>+        { "fill-rect", { "rect" } },
>+        { "fill-rect-with-color", { "rect", "color" } },
>+        { "fill-rect-with-gradient", { "rect", "gradient" } },
>+        { "fill-composited-rect", { "rect", "color", "composite-operator", "blend-mode" } },
>+        { "fill-rounded-rect", { "rect", "color", "blend-mode" } },
>+        { "fill-rect-with-rounded-hole", { "rect", "rounded-hole-rect", "color" } },
>+        { "fill-path", { "path" } },
>+        { "fill-ellipse", { "rect" } },
>+        { "stroke-rect", { "rect", "line-width" } },
>+        { "stroke-path", { "path" } },
>+        { "stroke-ellipse", { "rect" } },
>+        { "clear-rect", { "rect" } }
>+    });
>+
>+    ASSERT(static_cast<size_t>(ItemType::Max) == itemsDescriptors.get().size());
>+    return itemsDescriptors;
>+}
>+
>+static const ItemDescriptor& itemDescriptor(ItemType itemType)
>+{
>+    ASSERT(static_cast<size_t>(itemType) < itemsDescriptors().size());
>+    return itemsDescriptors()[static_cast<size_t>(itemType)];
> }
>-
>-static TextStream& operator<<(TextStream& ts, const DrawingItem& item)
>-{
>-    ts.startGroup();
>-    ts << "extent ";
>-    if (item.extentKnown())
>-        ts << item.extent();
>-    else
>-        ts << "unknown";
>     
>-    ts.endGroup();
>-    return ts;
>-}
>-
>-void Save::apply(GraphicsContext& context) const
>-{
>-    context.save();
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const Save& item)
>-{
>-    ts.dumpProperty("restore-index", item.restoreIndex());
>-    return ts;
>-}
>-
>-void Restore::apply(GraphicsContext& context) const
>-{
>-    context.restore();
>-}
>-
>-void Translate::apply(GraphicsContext& context) const
>-{
>-    context.translate(m_x, m_y);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const Translate& item)
>-{
>-    ts.dumpProperty("x", item.x());
>-    ts.dumpProperty("y", item.y());
>-
>-    return ts;
>-}
>-
>-void Rotate::apply(GraphicsContext& context) const
>-{
>-    context.rotate(m_angle);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const Rotate& item)
>-{
>-    ts.dumpProperty("angle", item.angle());
>-
>-    return ts;
>-}
>-
>-void Scale::apply(GraphicsContext& context) const
>-{
>-    context.scale(m_size);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const Scale& item)
>-{
>-    ts.dumpProperty("size", item.amount());
>-
>-    return ts;
>-}
>-
>-ConcatenateCTM::ConcatenateCTM(const AffineTransform& transform)
>-    : Item(ItemType::ConcatenateCTM)
>-    , m_transform(transform)
>-{
>-}
>-
>-void ConcatenateCTM::apply(GraphicsContext& context) const
>-{
>-    context.concatCTM(m_transform);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const ConcatenateCTM& item)
>-{
>-    ts.dumpProperty("ctm", item.transform());
>-
>-    return ts;
>-}
>-
>-void SetState::apply(GraphicsContext& context) const
>-{
>-    m_state.apply(context);
>-}
>-
>-void SetState::accumulate(const GraphicsContextState& state, GraphicsContextState::StateChangeFlags flags)
>-{
>-    m_state.accumulate(state, flags);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const SetState& state)
>-{
>-    ts << state.state();
>-    return ts;
>-}
>-
>-void SetLineCap::apply(GraphicsContext& context) const
>-{
>-    context.setLineCap(m_lineCap);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const SetLineCap& lineCap)
>-{
>-    ts.dumpProperty("line-cap", lineCap.lineCap());
>-    return ts;
>-}
>-
>-void SetLineDash::apply(GraphicsContext& context) const
>-{
>-    context.setLineDash(m_dashArray, m_dashOffset);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const SetLineDash& lineDash)
>-{
>-    ts.dumpProperty("dash-array", lineDash.dashArray());
>-    ts.dumpProperty("dash-offset", lineDash.dashOffset());
>-    return ts;
>-}
>-
>-void SetLineJoin::apply(GraphicsContext& context) const
>-{
>-    context.setLineJoin(m_lineJoin);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const SetLineJoin& lineJoin)
>-{
>-    ts.dumpProperty("line-join", lineJoin.lineJoin());
>-    return ts;
>-}
>-
>-void SetMiterLimit::apply(GraphicsContext& context) const
>-{
>-    context.setMiterLimit(m_miterLimit);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const SetMiterLimit& miterLimit)
>-{
>-    ts.dumpProperty("mitre-limit", miterLimit.miterLimit());
>-    return ts;
>-}
>-
>-void ClearShadow::apply(GraphicsContext& context) const
>-{
>-    context.clearShadow();
>-}
>-
>-void Clip::apply(GraphicsContext& context) const
>-{
>-    context.clip(m_rect);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const Clip& item)
>-{
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-void ClipOut::apply(GraphicsContext& context) const
>-{
>-    context.clipOut(m_rect);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const ClipOut& item)
>-{
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-void ClipOutToPath::apply(GraphicsContext& context) const
>-{
>-    context.clipOut(m_path);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const ClipOutToPath& item)
>-{
>-    ts.dumpProperty("path", item.path());
>-    return ts;
>-}
>-
>-void ClipPath::apply(GraphicsContext& context) const
>-{
>-    context.clipPath(m_path, m_windRule);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const ClipPath& item)
>-{
>-    ts.dumpProperty("path", item.path());
>-    ts.dumpProperty("wind-rule", item.windRule());
>-    return ts;
>-}
>-
>-DrawGlyphs::DrawGlyphs(const Font& font, const GlyphBufferGlyph* glyphs, const GlyphBufferAdvance* advances, unsigned count, const FloatPoint& blockLocation, const FloatSize& localAnchor, FontSmoothingMode smoothingMode)
>-    : DrawingItem(ItemType::DrawGlyphs)
>-    , m_font(const_cast<Font&>(font))
>-    , m_blockLocation(blockLocation)
>-    , m_localAnchor(localAnchor)
>-    , m_smoothingMode(smoothingMode)
>-{
>-    m_glyphs.reserveInitialCapacity(count);
>-    m_advances.reserveInitialCapacity(count);
>-    for (unsigned i = 0; i < count; ++i) {
>-        m_glyphs.uncheckedAppend(glyphs[i]);
>-        m_advances.uncheckedAppend(advances[i]);
>-    }
>-    computeBounds();
>-}
>-
>-inline GlyphBuffer DrawGlyphs::generateGlyphBuffer() const
>-{
>-    GlyphBuffer result;
>-    for (size_t i = 0; i < m_glyphs.size(); ++i) {
>-        result.add(m_glyphs[i], &m_font.get(), m_advances[i]);
>-    }
>-    return result;
>-}
>-
>-void DrawGlyphs::apply(GraphicsContext& context) const
>-{
>-    context.drawGlyphs(m_font, generateGlyphBuffer(), 0, m_glyphs.size(), anchorPoint(), m_smoothingMode);
>-}
>-
>-void DrawGlyphs::computeBounds()
>-{
>-    // FIXME: This code doesn't actually take the extents of the glyphs into consideration. It assumes that
>-    // the glyph lies entirely within its [(ascent + descent), advance] rect.
>-    float ascent = m_font->fontMetrics().floatAscent();
>-    float descent = m_font->fontMetrics().floatDescent();
>-    FloatPoint current = toFloatPoint(localAnchor());
>-    size_t numGlyphs = m_glyphs.size();
>-    for (size_t i = 0; i < numGlyphs; ++i) {
>-        GlyphBufferAdvance advance = m_advances[i];
>-        FloatRect glyphRect = FloatRect(current.x(), current.y() - ascent, advance.width(), ascent + descent);
>-        m_bounds.unite(glyphRect);
>-
>-        current.move(advance.width(), advance.height());
>-    }
>-}
>-
>-std::optional<FloatRect> DrawGlyphs::localBounds(const GraphicsContext&) const
>+String Item::name() const
> {
>-    FloatRect localBounds = m_bounds;
>-    localBounds.move(m_blockLocation.x(), m_blockLocation.y());
>-    return localBounds;
>+    return itemDescriptor(m_type).name;
> }
> 
>-static TextStream& operator<<(TextStream& ts, const DrawGlyphs& item)
>+String Item::argumentName(size_t index) const
> {
>-    ts << static_cast<const DrawingItem&>(item);
>-    // FIXME: dump more stuff.
>-    ts.dumpProperty("block-location", item.blockLocation());
>-    ts.dumpProperty("local-anchor", item.localAnchor());
>-    ts.dumpProperty("anchor-point", item.anchorPoint());
>-    ts.dumpProperty("length", item.glyphs().size());
>-
>-    return ts;
>-}
>-
>-DrawImage::DrawImage(Image& image, const FloatRect& destination, const FloatRect& source, const ImagePaintingOptions& imagePaintingOptions)
>-    : DrawingItem(ItemType::DrawImage)
>-    , m_image(image)
>-    , m_destination(destination)
>-    , m_source(source)
>-    , m_imagePaintingOptions(imagePaintingOptions)
>-{
>-}
>-
>-void DrawImage::apply(GraphicsContext& context) const
>-{
>-    context.drawImage(m_image.get(), m_destination, m_source, m_imagePaintingOptions);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawImage& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("image", item.image());
>-    ts.dumpProperty("source-rect", item.source());
>-    ts.dumpProperty("dest-rect", item.destination());
>-    return ts;
>-}
>-
>-DrawTiledImage::DrawTiledImage(Image& image, const FloatRect& destination, const FloatPoint& source, const FloatSize& tileSize, const FloatSize& spacing, const ImagePaintingOptions& imagePaintingOptions)
>-    : DrawingItem(ItemType::DrawTiledImage)
>-    , m_image(image)
>-    , m_destination(destination)
>-    , m_source(source)
>-    , m_tileSize(tileSize)
>-    , m_spacing(spacing)
>-    , m_imagePaintingOptions(imagePaintingOptions)
>-{
>-}
>-
>-void DrawTiledImage::apply(GraphicsContext& context) const
>-{
>-    context.drawTiledImage(m_image.get(), m_destination, m_source, m_tileSize, m_spacing, m_imagePaintingOptions);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawTiledImage& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("image", item.image());
>-    ts.dumpProperty("source-point", item.source());
>-    ts.dumpProperty("dest-rect", item.destination());
>-    ts.dumpProperty("tile-size", item.tileSize());
>-    ts.dumpProperty("spacing", item.spacing());
>-    return ts;
>-}
>-
>-DrawTiledScaledImage::DrawTiledScaledImage(Image& image, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions& imagePaintingOptions)
>-    : DrawingItem(ItemType::DrawTiledScaledImage)
>-    , m_image(image)
>-    , m_destination(destination)
>-    , m_source(source)
>-    , m_tileScaleFactor(tileScaleFactor)
>-    , m_hRule(hRule)
>-    , m_vRule(vRule)
>-    , m_imagePaintingOptions(imagePaintingOptions)
>-{
>-}
>-
>-void DrawTiledScaledImage::apply(GraphicsContext& context) const
>-{
>-    context.drawTiledImage(m_image.get(), m_destination, m_source, m_tileScaleFactor, m_hRule, m_vRule, m_imagePaintingOptions);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawTiledScaledImage& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("image", item.image());
>-    ts.dumpProperty("source-rect", item.source());
>-    ts.dumpProperty("dest-rect", item.destination());
>-    return ts;
>-}
>-
>-#if USE(CG) || USE(CAIRO)
>-DrawNativeImage::DrawNativeImage(const NativeImagePtr& image, const FloatSize& imageSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator op, BlendMode blendMode, ImageOrientation orientation)
>-    : DrawingItem(ItemType::DrawNativeImage)
>-#if USE(CG)
>-    // FIXME: Need to store an image for Cairo.
>-    , m_image(image)
>-#endif
>-    , m_imageSize(imageSize)
>-    , m_destination(destRect)
>-    , m_srcRect(srcRect)
>-#if USE(CG)
>-    , m_op(op)
>-    , m_blendMode(blendMode)
>-#endif
>-    , m_orientation(orientation)
>-{
>-#if !USE(CG)
>-    UNUSED_PARAM(image);
>-    UNUSED_PARAM(op);
>-    UNUSED_PARAM(blendMode);
>-#endif
>-}
>-
>-void DrawNativeImage::apply(GraphicsContext& context) const
>-{
>-#if USE(CG)
>-    context.drawNativeImage(m_image, m_imageSize, m_destination, m_srcRect, m_op, m_blendMode, m_orientation);
>-#else
>-    UNUSED_PARAM(context);
>-#endif
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawNativeImage& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    // FIXME: dump more stuff.
>-    ts.dumpProperty("source-rect", item.source());
>-    ts.dumpProperty("dest-rect", item.destination());
>-    return ts;
>-}
>-#endif
>-
>-DrawPattern::DrawPattern(Image& image, const FloatRect& destRect, const FloatRect& tileRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator op, BlendMode blendMode)
>-    : DrawingItem(ItemType::DrawPattern)
>-    , m_image(image)
>-    , m_patternTransform(patternTransform)
>-    , m_tileRect(tileRect)
>-    , m_destination(destRect)
>-    , m_phase(phase)
>-    , m_spacing(spacing)
>-    , m_op(op)
>-    , m_blendMode(blendMode)
>-{
>-}
>-
>-void DrawPattern::apply(GraphicsContext& context) const
>-{
>-    context.drawPattern(m_image.get(), m_destination, m_tileRect, m_patternTransform, m_phase, m_spacing, m_op, m_blendMode);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawPattern& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("image", item.image());
>-    ts.dumpProperty("pattern-transform", item.patternTransform());
>-    ts.dumpProperty("tile-rect", item.tileRect());
>-    ts.dumpProperty("dest-rect", item.destRect());
>-    ts.dumpProperty("phase", item.phase());
>-    ts.dumpProperty("spacing", item.spacing());
>-    return ts;
>-}
>-
>-void DrawRect::apply(GraphicsContext& context) const
>-{
>-    context.drawRect(m_rect, m_borderThickness);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawRect& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    ts.dumpProperty("border-thickness", item.borderThickness());
>-    return ts;
>-}
>-
>-std::optional<FloatRect> DrawLine::localBounds(const GraphicsContext&) const
>-{
>-    FloatRect bounds;
>-    bounds.fitToPoints(m_point1, m_point2);
>-    return bounds;
>-}
>-
>-void DrawLine::apply(GraphicsContext& context) const
>-{
>-    context.drawLine(m_point1, m_point2);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawLine& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("point-1", item.point1());
>-    ts.dumpProperty("point-2", item.point2());
>-    return ts;
>-}
>-
>-void DrawLinesForText::apply(GraphicsContext& context) const
>-{
>-    context.drawLinesForText(point(), m_widths, m_printing, m_doubleLines);
>-}
>-
>-std::optional<FloatRect> DrawLinesForText::localBounds(const GraphicsContext&) const
>-{
>-    // This function needs to return a value equal to or enclosing what GraphicsContext::computeLineBoundsAndAntialiasingModeForText() returns.
>-
>-    if (!m_widths.size())
>-        return FloatRect();
>-
>-    FloatRect result(point(), FloatSize(m_widths.last(), m_strokeWidth));
>-    result.inflate(1); // Account for pixel snapping. FIXME: This isn't perfect, as it doesn't take the CTM into account.
>-    return result;
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawLinesForText& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("block-location", item.blockLocation());
>-    ts.dumpProperty("local-anchor", item.localAnchor());
>-    ts.dumpProperty("point", item.point());
>-    ts.dumpProperty("double", item.doubleLines());
>-    ts.dumpProperty("widths", item.widths());
>-    ts.dumpProperty("is-printing", item.isPrinting());
>-    ts.dumpProperty("double", item.doubleLines());
>-    return ts;
>-}
>-
>-void DrawLineForDocumentMarker::apply(GraphicsContext& context) const
>-{
>-    context.drawLineForDocumentMarker(m_point, m_width, m_style);
>-}
>-
>-std::optional<FloatRect> DrawLineForDocumentMarker::localBounds(const GraphicsContext&) const
>-{
>-    // This function needs to return a value equal to or enclosing what GraphicsContext::drawLineForDocumentMarker() returns.
>-
>-    FloatRect result(m_point, FloatSize(m_width, cMisspellingLineThickness));
>-    result.inflate(cMisspellingLineThickness); // Account for "misspelling dot" snapping.
>-    return result;
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawLineForDocumentMarker& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("point", item.point());
>-    ts.dumpProperty("width", item.width());
>-    return ts;
>-}
>-
>-void DrawEllipse::apply(GraphicsContext& context) const
>-{
>-    context.drawEllipse(m_rect);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawEllipse& item)
>-{
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-void DrawPath::apply(GraphicsContext& context) const
>-{
>-#if USE(CG)
>-    context.drawPath(m_path);
>-#else
>-    UNUSED_PARAM(context);
>-#endif
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawPath& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-//    ts.dumpProperty("path", item.path()); // FIXME: add logging for paths.
>-    return ts;
>-}
>-
>-void DrawFocusRingPath::apply(GraphicsContext& context) const
>-{
>-    context.drawFocusRing(m_path, m_width, m_offset, m_color);
>-}
>-
>-std::optional<FloatRect> DrawFocusRingPath::localBounds(const GraphicsContext&) const
>-{
>-    FloatRect result = m_path.fastBoundingRect();
>-    result.inflate(platformFocusRingWidth);
>-    return result;
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawFocusRingPath& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-//    ts.dumpProperty("path", item.path()); // FIXME: add logging for paths.
>-    ts.dumpProperty("width", item.width());
>-    ts.dumpProperty("offset", item.offset());
>-    ts.dumpProperty("color", item.color());
>-    return ts;
>-}
>-
>-void DrawFocusRingRects::apply(GraphicsContext& context) const
>-{
>-    context.drawFocusRing(m_rects, m_width, m_offset, m_color);
>-}
>-
>-std::optional<FloatRect> DrawFocusRingRects::localBounds(const GraphicsContext&) const
>-{
>-    FloatRect result;
>-    for (auto& rect : m_rects)
>-        result.unite(rect);
>-    result.inflate(platformFocusRingWidth);
>-    return result;
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const DrawFocusRingRects& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rects", item.rects());
>-    ts.dumpProperty("width", item.width());
>-    ts.dumpProperty("offset", item.offset());
>-    ts.dumpProperty("color", item.color());
>-    return ts;
>-}
>-
>-void FillRect::apply(GraphicsContext& context) const
>-{
>-    context.fillRect(m_rect);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillRect& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-void FillRectWithColor::apply(GraphicsContext& context) const
>-{
>-    context.fillRect(m_rect, m_color);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillRectWithColor& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    ts.dumpProperty("color", item.color());
>-    return ts;
>-}
>-
>-void FillRectWithGradient::apply(GraphicsContext& context) const
>-{
>-    context.fillRect(m_rect, m_gradient.get());
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillRectWithGradient& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    // FIXME: log gradient.
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-void FillCompositedRect::apply(GraphicsContext& context) const
>-{
>-    context.fillRect(m_rect, m_color, m_op, m_blendMode);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillCompositedRect& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    ts.dumpProperty("color", item.color());
>-    ts.dumpProperty("composite-operation", item.compositeOperator());
>-    ts.dumpProperty("blend-mode", item.blendMode());
>-    return ts;
>-}
>-
>-void FillRoundedRect::apply(GraphicsContext& context) const
>-{
>-    context.fillRoundedRect(m_rect, m_color, m_blendMode);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillRoundedRect& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.roundedRect());
>-    ts.dumpProperty("color", item.color());
>-    ts.dumpProperty("blend-mode", item.blendMode());
>-    return ts;
>-}
>-
>-void FillRectWithRoundedHole::apply(GraphicsContext& context) const
>-{
>-    context.fillRectWithRoundedHole(m_rect, m_roundedHoleRect, m_color);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillRectWithRoundedHole& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    ts.dumpProperty("rounded-hole-rect", item.roundedHoleRect());
>-    ts.dumpProperty("color", item.color());
>-    return ts;
>-}
>-
>-void FillPath::apply(GraphicsContext& context) const
>-{
>-    context.fillPath(m_path);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillPath& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("path", item.path());
>-    return ts;
>-}
>-
>-void FillEllipse::apply(GraphicsContext& context) const
>-{
>-    context.fillEllipse(m_rect);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const FillEllipse& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-std::optional<FloatRect> StrokeRect::localBounds(const GraphicsContext&) const
>-{
>-    FloatRect bounds = m_rect;
>-    bounds.expand(m_lineWidth, m_lineWidth);
>-    return bounds;
>-}
>-
>-void StrokeRect::apply(GraphicsContext& context) const
>-{
>-    context.strokeRect(m_rect, m_lineWidth);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const StrokeRect& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    ts.dumpProperty("line-width", item.lineWidth());
>-    return ts;
>-}
>-
>-std::optional<FloatRect> StrokePath::localBounds(const GraphicsContext& context) const
>-{
>-    // FIXME: Need to take stroke thickness into account correctly, via CGPathByStrokingPath().
>-    float strokeThickness = context.strokeThickness();
>-
>-    FloatRect bounds = m_path.boundingRect();
>-    bounds.expand(strokeThickness, strokeThickness);
>-    return bounds;
>-}
>-
>-void StrokePath::apply(GraphicsContext& context) const
>-{
>-    context.strokePath(m_path);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const StrokePath& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("path", item.path());
>-    return ts;
>-}
>-
>-std::optional<FloatRect> StrokeEllipse::localBounds(const GraphicsContext& context) const
>-{
>-    float strokeThickness = context.strokeThickness();
>-
>-    FloatRect bounds = m_rect;
>-    bounds.expand(strokeThickness, strokeThickness);
>-    return bounds;
>-}
>-
>-void StrokeEllipse::apply(GraphicsContext& context) const
>-{
>-    context.strokeEllipse(m_rect);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const StrokeEllipse& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-void ClearRect::apply(GraphicsContext& context) const
>-{
>-    context.clearRect(m_rect);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const ClearRect& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("rect", item.rect());
>-    return ts;
>-}
>-
>-void BeginTransparencyLayer::apply(GraphicsContext& context) const
>-{
>-    context.beginTransparencyLayer(m_opacity);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const BeginTransparencyLayer& item)
>-{
>-    ts << static_cast<const DrawingItem&>(item);
>-    ts.dumpProperty("opacity", item.opacity());
>-    return ts;
>-}
>-
>-void EndTransparencyLayer::apply(GraphicsContext& context) const
>-{
>-    context.endTransparencyLayer();
>-}
>-
>-#if USE(CG)
>-void ApplyStrokePattern::apply(GraphicsContext& context) const
>-{
>-    context.applyStrokePattern();
>-}
>-
>-void ApplyFillPattern::apply(GraphicsContext& context) const
>-{
>-    context.applyFillPattern();
>-}
>-#endif
>-
>-void ApplyDeviceScaleFactor::apply(GraphicsContext& context) const
>-{
>-    context.applyDeviceScaleFactor(m_scaleFactor);
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const ApplyDeviceScaleFactor& item)
>-{
>-    ts.dumpProperty("scale-factor", item.scaleFactor());
>-    return ts;
>-}
>-
>-static TextStream& operator<<(TextStream& ts, const ItemType& type)
>-{
>-    switch (type) {
>-    case ItemType::Save: ts << "save"; break;
>-    case ItemType::Restore: ts << "restore"; break;
>-    case ItemType::Translate: ts << "translate"; break;
>-    case ItemType::Rotate: ts << "rotate"; break;
>-    case ItemType::Scale: ts << "scale"; break;
>-    case ItemType::ConcatenateCTM: ts << "concatentate-ctm"; break;
>-    case ItemType::SetState: ts << "set-state"; break;
>-    case ItemType::SetLineCap: ts << "set-line-cap"; break;
>-    case ItemType::SetLineDash: ts << "set-line-dash"; break;
>-    case ItemType::SetLineJoin: ts << "set-line-join"; break;
>-    case ItemType::SetMiterLimit: ts << "set-miter-limit"; break;
>-    case ItemType::Clip: ts << "clip"; break;
>-    case ItemType::ClipOut: ts << "clip-out"; break;
>-    case ItemType::ClipOutToPath: ts << "clip-out-to-path"; break;
>-    case ItemType::ClipPath: ts << "clip-path"; break;
>-    case ItemType::DrawGlyphs: ts << "draw-glyphs"; break;
>-    case ItemType::DrawImage: ts << "draw-image"; break;
>-    case ItemType::DrawTiledImage: ts << "draw-tiled-image"; break;
>-    case ItemType::DrawTiledScaledImage: ts << "draw-tiled-scaled-image"; break;
>-#if USE(CG) || USE(CAIRO)
>-    case ItemType::DrawNativeImage: ts << "draw-native-image"; break;
>-#endif
>-    case ItemType::DrawPattern: ts << "draw-pattern"; break;
>-    case ItemType::DrawRect: ts << "draw-rect"; break;
>-    case ItemType::DrawLine: ts << "draw-line"; break;
>-    case ItemType::DrawLinesForText: ts << "draw-lines-for-text"; break;
>-    case ItemType::DrawLineForDocumentMarker: ts << "draw-lines-for-document-marker"; break;
>-    case ItemType::DrawEllipse: ts << "draw-ellipse"; break;
>-    case ItemType::DrawPath: ts << "draw-path"; break;
>-    case ItemType::DrawFocusRingPath: ts << "draw-focus-ring-path"; break;
>-    case ItemType::DrawFocusRingRects: ts << "draw-focus-ring-rects"; break;
>-    case ItemType::FillRect: ts << "fill-rect"; break;
>-    case ItemType::FillRectWithColor: ts << "fill-rect-with-color"; break;
>-    case ItemType::FillRectWithGradient: ts << "fill-rect-with-gradient"; break;
>-    case ItemType::FillCompositedRect: ts << "fill-composited-rect"; break;
>-    case ItemType::FillRoundedRect: ts << "fill-rounded-rect"; break;
>-    case ItemType::FillRectWithRoundedHole: ts << "fill-rect-with-rounded-hole"; break;
>-    case ItemType::FillPath: ts << "fill-path"; break;
>-    case ItemType::FillEllipse: ts << "fill-ellipse"; break;
>-    case ItemType::StrokeRect: ts << "stroke-rect"; break;
>-    case ItemType::StrokePath: ts << "stroke-path"; break;
>-    case ItemType::StrokeEllipse: ts << "stroke-ellipse"; break;
>-    case ItemType::ClearRect: ts << "clear-rect"; break;
>-    case ItemType::BeginTransparencyLayer: ts << "begin-transparency-layer"; break;
>-    case ItemType::EndTransparencyLayer: ts << "end-transparency-layer"; break;
>-#if USE(CG)
>-    case ItemType::ApplyStrokePattern: ts << "apply-stroke-pattern"; break;
>-    case ItemType::ApplyFillPattern: ts << "apply-fill-pattern"; break;
>-#endif
>-    case ItemType::ApplyDeviceScaleFactor: ts << "apply-device-scale-factor"; break;
>-    case ItemType::ClearShadow: ts << "clear-shadow"; break;
>-    }
>-    return ts;
>-}
>-
>-TextStream& operator<<(TextStream& ts, const Item& item)
>-{
>-    TextStream::GroupScope group(ts);
>-    ts << item.type();
>-
>-    // FIXME: Make a macro which takes a macro for all these enumeration switches
>-    switch (item.type()) {
>-    case ItemType::Save:
>-        ts << downcast<Save>(item);
>-        break;
>-    case ItemType::Translate:
>-        ts << downcast<Translate>(item);
>-        break;
>-    case ItemType::Rotate:
>-        ts << downcast<Rotate>(item);
>-        break;
>-    case ItemType::Scale:
>-        ts << downcast<Scale>(item);
>-        break;
>-    case ItemType::ConcatenateCTM:
>-        ts << downcast<ConcatenateCTM>(item);
>-        break;
>-    case ItemType::SetState:
>-        ts << downcast<SetState>(item);
>-        break;
>-    case ItemType::SetLineCap:
>-        ts << downcast<SetLineCap>(item);
>-        break;
>-    case ItemType::SetLineDash:
>-        ts << downcast<SetLineDash>(item);
>-        break;
>-    case ItemType::SetLineJoin:
>-        ts << downcast<SetLineJoin>(item);
>-        break;
>-    case ItemType::SetMiterLimit:
>-        ts << downcast<SetMiterLimit>(item);
>-        break;
>-    case ItemType::Clip:
>-        ts << downcast<Clip>(item);
>-        break;
>-    case ItemType::ClipOut:
>-        ts << downcast<ClipOut>(item);
>-        break;
>-    case ItemType::ClipOutToPath:
>-        ts << downcast<ClipOutToPath>(item);
>-        break;
>-    case ItemType::ClipPath:
>-        ts << downcast<ClipPath>(item);
>-        break;
>-    case ItemType::DrawGlyphs:
>-        ts << downcast<DrawGlyphs>(item);
>-        break;
>-    case ItemType::DrawImage:
>-        ts << downcast<DrawImage>(item);
>-        break;
>-    case ItemType::DrawTiledImage:
>-        ts << downcast<DrawTiledImage>(item);
>-        break;
>-    case ItemType::DrawTiledScaledImage:
>-        ts << downcast<DrawTiledScaledImage>(item);
>-        break;
>-#if USE(CG) || USE(CAIRO)
>-    case ItemType::DrawNativeImage:
>-        ts << downcast<DrawNativeImage>(item);
>-        break;
>-#endif
>-    case ItemType::DrawPattern:
>-        ts << downcast<DrawPattern>(item);
>-        break;
>-    case ItemType::DrawRect:
>-        ts << downcast<DrawRect>(item);
>-        break;
>-    case ItemType::DrawLine:
>-        ts << downcast<DrawLine>(item);
>-        break;
>-    case ItemType::DrawLinesForText:
>-        ts << downcast<DrawLinesForText>(item);
>-        break;
>-    case ItemType::DrawLineForDocumentMarker:
>-        ts << downcast<DrawLineForDocumentMarker>(item);
>-        break;
>-    case ItemType::DrawEllipse:
>-        ts << downcast<DrawEllipse>(item);
>-        break;
>-    case ItemType::DrawPath:
>-        ts << downcast<DrawPath>(item);
>-        break;
>-    case ItemType::DrawFocusRingPath:
>-        ts << downcast<DrawFocusRingPath>(item);
>-        break;
>-    case ItemType::DrawFocusRingRects:
>-        ts << downcast<DrawFocusRingRects>(item);
>-        break;
>-    case ItemType::FillRect:
>-        ts << downcast<FillRect>(item);
>-        break;
>-    case ItemType::FillRectWithColor:
>-        ts << downcast<FillRectWithColor>(item);
>-        break;
>-    case ItemType::FillRectWithGradient:
>-        ts << downcast<FillRectWithGradient>(item);
>-        break;
>-    case ItemType::FillCompositedRect:
>-        ts << downcast<FillCompositedRect>(item);
>-        break;
>-    case ItemType::FillRoundedRect:
>-        ts << downcast<FillRoundedRect>(item);
>-        break;
>-    case ItemType::FillRectWithRoundedHole:
>-        ts << downcast<FillRectWithRoundedHole>(item);
>-        break;
>-    case ItemType::FillPath:
>-        ts << downcast<FillPath>(item);
>-        break;
>-    case ItemType::FillEllipse:
>-        ts << downcast<FillEllipse>(item);
>-        break;
>-    case ItemType::StrokeRect:
>-        ts << downcast<StrokeRect>(item);
>-        break;
>-    case ItemType::StrokePath:
>-        ts << downcast<StrokePath>(item);
>-        break;
>-    case ItemType::StrokeEllipse:
>-        ts << downcast<StrokeEllipse>(item);
>-        break;
>-    case ItemType::ClearRect:
>-        ts << downcast<ClearRect>(item);
>-        break;
>-    case ItemType::BeginTransparencyLayer:
>-        ts << downcast<BeginTransparencyLayer>(item);
>-        break;
>-    case ItemType::ApplyDeviceScaleFactor:
>-        ts << downcast<ApplyDeviceScaleFactor>(item);
>-        break;
>-
>-    // Items with no additional data.
>-    case ItemType::Restore:
>-    case ItemType::EndTransparencyLayer:
>-#if USE(CG)
>-    case ItemType::ApplyStrokePattern:
>-    case ItemType::ApplyFillPattern:
>-#endif
>-    case ItemType::ClearShadow:
>-        break;
>-    }
>-    return ts;
>+    ASSERT(index < itemDescriptor(m_type).argumentsNames.size());
>+    return itemDescriptor(m_type).argumentsNames[index];
> }
> 
> }
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayListItems.h b/Source/WebCore/platform/graphics/displaylists/DisplayListItems.h
>index f00ea7e85cb1cd52469be1588d011e838473c13c..4cc185442b154ec2c5f894ee992d59a65375f4d7 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayListItems.h
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayListItems.h
>@@ -1,5 +1,5 @@
> /*
>- * Copyright (C) 2015 Apple Inc. All rights reserved.
>+ * Copyright (C) 2015-2018 Apple Inc. All rights reserved.
>  *
>  * Redistribution and use in source and binary forms, with or without
>  * modification, are permitted provided that the following conditions
>@@ -31,32 +31,32 @@
> #include "Font.h"
> #include "GlyphBuffer.h"
> #include "GraphicsContext.h"
>+#include "Icon.h"
> #include "Image.h"
>+#include "Scrollbar.h"
>+#include "Theme.h"
>+#include "ThemeTypes.h"
>+#include "Widget.h"
> #include <wtf/RefCounted.h>
> #include <wtf/TypeCasts.h>
>+#include <wtf/text/TextStream.h>
> 
> #if USE(CG)
> #include "GraphicsContextPlatformPrivateCG.h"
> #endif
> 
>-namespace WTF {
>-class TextStream;
>-}
>-
> namespace WebCore {
>-
>-struct ImagePaintingOptions;
>-
> namespace DisplayList {
> 
> enum class ItemType {
>-    Save,
>+    Min = 0,
>+    Save = Min,
>     Restore,
>+    SetState,
>     Translate,
>     Rotate,
>     Scale,
>     ConcatenateCTM,
>-    SetState,
>     SetLineCap,
>     SetLineDash,
>     SetLineJoin,
>@@ -66,13 +66,19 @@ enum class ItemType {
>     ClipOut,
>     ClipOutToPath,
>     ClipPath,
>+    ClipToImageBuffer,
>+    ApplyStrokePattern,
>+    ApplyFillPattern,
>+    ApplyDeviceScaleFactor,
>+
>+    BeginTransparencyLayer,
>+    EndTransparencyLayer,
>     DrawGlyphs,
>     DrawImage,
>     DrawTiledImage,
>     DrawTiledScaledImage,
>-#if USE(CG) || USE(CAIRO)
>     DrawNativeImage,
>-#endif
>+    DrawNativeScaledImage,
>     DrawPattern,
>     DrawRect,
>     DrawLine,
>@@ -82,6 +88,10 @@ enum class ItemType {
>     DrawPath,
>     DrawFocusRingPath,
>     DrawFocusRingRects,
>+    DrawIcon,
>+    DrawWidget,
>+    DrawScrollbar,
>+    DrawTheme,
>     FillRect,
>     FillRectWithColor,
>     FillRectWithGradient,
>@@ -94,1295 +104,966 @@ enum class ItemType {
>     StrokePath,
>     StrokeEllipse,
>     ClearRect,
>-    BeginTransparencyLayer,
>-    EndTransparencyLayer,
>-#if USE(CG)
>-    ApplyStrokePattern, // FIXME: should not be a recorded item.
>-    ApplyFillPattern, // FIXME: should not be a recorded item.
>-#endif
>-    ApplyDeviceScaleFactor,
>+    Max
> };
> 
> class Item : public RefCounted<Item> {
> public:
>-    Item() = delete;
>-
>-    Item(ItemType type)
>-        : m_type(type)
>-    {
>-    }
>-
>     virtual ~Item() = default;
> 
>-    ItemType type() const
>-    {
>-        return m_type;
>-    }
>-
>     virtual void apply(GraphicsContext&) const = 0;
> 
>-    static constexpr bool isDisplayListItem = true;
>+    virtual bool isGeometryItem() const { return false; }
>+    virtual size_t sizeInBytes() const = 0;
> 
>-    virtual bool isDrawingItem() const { return false; }
>-    
>-    // A state item is one preserved by Save/Restore.
>-    bool isStateItem() const
>+    virtual void dump(WTF::TextStream& ts) const
>     {
>-        return isStateItemType(m_type);
>+        ts << name();
>     }
> 
>-    static bool isStateItemType(ItemType itemType)
>+    ItemType type() const { return m_type; }
>+    WTF::CString dump() const;
>+
>+protected:
>+    Item(ItemType type)
>+        : m_type(type)
>     {
>-        switch (itemType) {
>-        case ItemType:: Translate:
>-        case ItemType:: Rotate:
>-        case ItemType:: Scale:
>-        case ItemType:: ConcatenateCTM:
>-        case ItemType:: SetState:
>-        case ItemType:: SetLineCap:
>-        case ItemType:: SetLineDash:
>-        case ItemType:: SetLineJoin:
>-        case ItemType:: SetMiterLimit:
>-        case ItemType:: ClearShadow:
>-            return true;
>-        default:
>-            return false;
>-        }
>-        return false;
>     }
> 
>-#if !defined(NDEBUG) || !LOG_DISABLED
>-    WTF::CString description() const;
>-#endif
>-    static size_t sizeInBytes(const Item&);
>+    String name() const;
>+    String argumentName(size_t index) const;
> 
>-private:
>     ItemType m_type;
> };
> 
>-class DrawingItem : public Item {
>+class GeometryItem : public Item {
> public:
>-    DrawingItem(ItemType type)
>-        : Item(type)
>-    {
>-    }
>-
>-    void setExtent(const FloatRect& r) { m_extent = r; }
>-    const FloatRect& extent() const { return m_extent.value(); }
>-
>     bool extentKnown() const { return static_cast<bool>(m_extent); }
> 
>-    // Return bounds of this drawing operation in local coordinates.
>-    // Does not include effets of transform, shadow etc in the state.
>-    virtual std::optional<FloatRect> localBounds(const GraphicsContext&) const { return std::nullopt; }
>-
>-private:
>-    bool isDrawingItem() const override { return true; }
>-
>-    std::optional<FloatRect> m_extent; // In base coordinates, taking shadows and transforms into account.
>-};
>-
>-class Save : public Item {
>-public:
>-    static Ref<Save> create()
>+    void setExtent(const FloatRect& extent) { m_extent = extent; }
>+    const FloatRect extent() const
>     {
>-        return adoptRef(*new Save);
>+        return m_extent.value_or(FloatRect());
>     }
> 
>-    // Index in the display list of the corresponding Restore item. 0 if unmatched.
>-    size_t restoreIndex() const { return m_restoreIndex; }
>-    void setRestoreIndex(size_t index) { m_restoreIndex = index; }
>-
>-private:
>-    Save()
>-        : Item(ItemType::Save)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>+    virtual const std::optional<FloatRect> localBounds(const GraphicsContext&) const { return std::nullopt; }
>     
>-    size_t m_restoreIndex { 0 };
>-};
>-
>-class Restore : public Item {
>-public:
>-    static Ref<Restore> create()
>+protected:
>+    GeometryItem(ItemType type)
>+        : Item(type)
>     {
>-        return adoptRef(*new Restore);
>     }
> 
>-private:
>-    Restore()
>-        : Item(ItemType::Restore)
>+    void dump(WTF::TextStream& ts) const override
>     {
>+        Item::dump(ts);
>+        ts.startGroup();
>+        ts << "extent ";
>+        if (extentKnown())
>+            ts << extent();
>+        else
>+            ts << "unknown";
>+        ts.endGroup();
>     }
> 
>-    void apply(GraphicsContext&) const override;
>+    std::optional<FloatRect> m_extent;
> };
> 
>-class Translate : public Item {
>-public:
>-    static Ref<Translate> create(float x, float y)
>+template <typename Applier, Applier applier, class... Arguments>
>+class GraphicsItem {
>+protected:
>+    GraphicsItem(Arguments... arguments)
>+        : m_arguments(std::forward<Arguments>(arguments)...)
>     {
>-        return adoptRef(*new Translate(x, y));
>     }
> 
>-    float x() const { return m_x; }
>-    float y() const { return m_y; }
>-
>-private:
>-    Translate(float x, float y)
>-        : Item(ItemType::Translate)
>-        , m_x(x)
>-        , m_y(y)
>+    template< std::size_t I>
>+    const auto& argument() const
>     {
>+        return std::get<I>(m_arguments);
>     }
> 
>-    void apply(GraphicsContext&) const override;
>-
>-    float m_x;
>-    float m_y;
>-};
>-
>-class Rotate : public Item {
>-public:
>-    static Ref<Rotate> create(float angleInRadians)
>+    void apply(GraphicsContext& context) const
>     {
>-        return adoptRef(*new Rotate(angleInRadians));
>+        apply(context, std::index_sequence_for<Arguments...>());
>     }
> 
>-    float angle() const { return m_angle; }
>-
>-private:
>-    Rotate(float angle)
>-        : Item(ItemType::Rotate)
>-        , m_angle(angle)
>+    template <typename Functor>
>+    void iterarte(Functor&& functor) const
>     {
>+        iterarte(WTFMove(functor), std::index_sequence_for<Arguments...>());
>     }
> 
>-    void apply(GraphicsContext&) const override;
>-
>-    float m_angle; // In radians.
>-};
>-
>-class Scale : public Item {
>-public:
>-    static Ref<Scale> create(const FloatSize& size)
>+private:
>+    template<std::size_t... Indices>
>+    void apply(GraphicsContext& context, std::index_sequence<Indices...>) const
>     {
>-        return adoptRef(*new Scale(size));
>+        (context.*applier)(std::get<Indices>(m_arguments)...);
>     }
> 
>-    const FloatSize& amount() const { return m_size; }
>-
>-private:
>-    Scale(const FloatSize& size)
>-        : Item(ItemType::Scale)
>-        , m_size(size)
>+    template<typename Functor, std::size_t... Indices>
>+    void iterarte(Functor&& functor, std::index_sequence<Indices...>) const
>     {
>+        using swallow = int[];
>+        (void)swallow { 1, (functor(Indices, std::get<Indices>(m_arguments)), int { })... };
>     }
> 
>-    void apply(GraphicsContext&) const override;
>-
>-    FloatSize m_size;
>+    std::tuple<Arguments...> m_arguments;
> };
> 
>-class ConcatenateCTM : public Item {
>+template <ItemType itemType, typename Applier, Applier applier, class... Arguments>
>+class SettingItem : public Item, public GraphicsItem<Applier, applier, Arguments...>  {
> public:
>-    static Ref<ConcatenateCTM> create(const AffineTransform& matrix)
>+    static Ref<Item> create(Arguments... arguments)
>     {
>-        return adoptRef(*new ConcatenateCTM(matrix));
>+        return adoptRef(*new SettingItem(arguments...));
>     }
> 
>-    const AffineTransform& transform() const { return m_transform; }
>-
>-private:
>-    ConcatenateCTM(const AffineTransform&);
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    AffineTransform m_transform;
>-};
>-
>-class SetState : public Item {
>-public:
>-    static Ref<SetState> create(const GraphicsContextState& state, GraphicsContextState::StateChangeFlags flags)
>+    template<typename T>
>+    static Ref<Item> create(Arguments... arguments)
>     {
>-        return adoptRef(*new SetState(state, flags));
>+        static_assert(std::is_base_of<Self, T>::value, "This function should create classes from SettingItem.");
>+        return adoptRef(*new T(std::forward<Arguments>(arguments)...));
>     }
>-    
>-    const GraphicsContextStateChange& state() const { return m_state; }
>-
>-    void accumulate(const GraphicsContextState&, GraphicsContextState::StateChangeFlags);
> 
>-    void accumulate(GraphicsContextState&) const;
>+    using GraphicsItemBase = GraphicsItem<Applier, applier, Arguments...>;
> 
>-    static void applyState(GraphicsContext&, const GraphicsContextState&, GraphicsContextState::StateChangeFlags);
>-
>-    static void dumpStateChanges(WTF::TextStream&, const GraphicsContextState&, GraphicsContextState::StateChangeFlags);
>-private:
>-    SetState(const GraphicsContextState& state, GraphicsContextState::StateChangeFlags flags)
>-        : Item(ItemType::SetState)
>-        , m_state(state, flags)
>+    SettingItem(Arguments... arguments)
>+        : Item(itemType)
>+        , GraphicsItemBase(std::forward<Arguments>(arguments)...)
>     {
>     }
> 
>-    void apply(GraphicsContext&) const override;
>-
>-    GraphicsContextStateChange m_state;
>-};
>-
>-class SetLineCap : public Item {
>-public:
>-    static Ref<SetLineCap> create(LineCap lineCap)
>+    void dump(WTF::TextStream& ts) const override
>     {
>-        return adoptRef(*new SetLineCap(lineCap));
>+        Item::dump(ts);
>+        GraphicsItemBase::iterarte([this, &ts](size_t index, const auto& argumentValue) {
>+            ts.dumpProperty(this->argumentName(index), argumentValue);
>+        });
>     }
>-    
>-    LineCap lineCap() const { return m_lineCap; }
> 
> private:
>-    SetLineCap(LineCap lineCap)
>-        : Item(ItemType::SetLineCap)
>-        , m_lineCap(lineCap)
>+    using Self = SettingItem<itemType, Applier, applier, Arguments...>;
>+
>+    void apply(GraphicsContext& context) const override
>     {
>+        GraphicsItemBase::apply(context);
>     }
> 
>-    void apply(GraphicsContext&) const override;
>-
>-    LineCap m_lineCap;
>+    size_t sizeInBytes() const override { return sizeof(*this); }
> };
> 
>-class SetLineDash : public Item {
>+template <ItemType itemType, typename Applier, Applier applier, class... Arguments>
>+class DrawingItem : public GeometryItem, public GraphicsItem<Applier, applier, Arguments...>  {
> public:
>-    static Ref<SetLineDash> create(const DashArray& dashArray, float dashOffset)
>+    static Ref<Item> create(Arguments... arguments)
>     {
>-        return adoptRef(*new SetLineDash(dashArray, dashOffset));
>+        return adoptRef(*new DrawingItem(std::forward<Arguments>(arguments)...));
>     }
> 
>-    const DashArray& dashArray() const { return m_dashArray; }
>-    float dashOffset() const { return m_dashOffset; }
>-
>-private:
>-    SetLineDash(const DashArray& dashArray, float dashOffset)
>-        : Item(ItemType::SetLineDash)
>-        , m_dashArray(dashArray)
>-        , m_dashOffset(dashOffset)
>+    template<typename T>
>+    static Ref<Item> create(Arguments... arguments)
>     {
>+        static_assert(std::is_base_of<Self, T>::value, "This function should create classes from DrawingItem.");
>+        return adoptRef(*new T(std::forward<Arguments>(arguments)...));
>     }
> 
>-    void apply(GraphicsContext&) const override;
>+    using GraphicsItemBase = GraphicsItem<Applier, applier, Arguments...>;
> 
>-    DashArray m_dashArray;
>-    float m_dashOffset;
>-};
>+    // Should match RenderTheme::platformFocusRingWidth()
>+    constexpr static float const s_platformFocusRingWidth = 3;
> 
>-class SetLineJoin : public Item {
>-public:
>-    static Ref<SetLineJoin> create(LineJoin lineJoin)
>+    DrawingItem(Arguments... arguments)
>+        : GeometryItem(itemType)
>+        , GraphicsItemBase(std::forward<Arguments>(arguments)...)
>     {
>-        return adoptRef(*new SetLineJoin(lineJoin));
>     }
>-    
>-    LineJoin lineJoin() const { return m_lineJoin; }
> 
> private:
>-    SetLineJoin(LineJoin lineJoin)
>-        : Item(ItemType::SetLineJoin)
>-        , m_lineJoin(lineJoin)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    LineJoin m_lineJoin;
>-};
>+    using Self = DrawingItem<itemType, Applier, applier, Arguments...>;
> 
>-class SetMiterLimit : public Item {
>-public:
>-    static Ref<SetMiterLimit> create(float limit)
>+    void apply(GraphicsContext& context) const override
>     {
>-        return adoptRef(*new SetMiterLimit(limit));
>+        GraphicsItemBase::apply(context);
>     }
> 
>-    float miterLimit() const { return m_miterLimit; }
>+    bool isGeometryItem() const override { return true; }
>+    size_t sizeInBytes() const override { return sizeof(*this); }
> 
>-private:
>-    SetMiterLimit(float miterLimit)
>-        : Item(ItemType::SetMiterLimit)
>-        , m_miterLimit(miterLimit)
>+    void dump(WTF::TextStream& ts) const override
>     {
>+        GeometryItem::dump(ts);
>+        GraphicsItemBase::iterarte([this, &ts](size_t index, const auto& argumentValue) {
>+            ts.dumpProperty(this->argumentName(index), argumentValue);
>+        });
>     }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    float m_miterLimit;
> };
> 
>-class ClearShadow : public Item {
>-public:
>-    static Ref<ClearShadow> create()
>-    {
>-        return adoptRef(*new ClearShadow);
>-    }
>-
>-private:
>-    ClearShadow()
>-        : Item(ItemType::ClearShadow)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-};
>+using SaveBase = SettingItem<
>+    ItemType::Save,
>+    void (GraphicsContext::*)(),
>+    &GraphicsContext::save
>+>;
> 
>-// FIXME: treat as DrawingItem?
>-class Clip : public Item {
>+class Save : public SaveBase {
> public:
>-    static Ref<Clip> create(const FloatRect& rect)
>-    {
>-        return adoptRef(*new Clip(rect));
>-    }
>+    constexpr static auto create = SaveBase::create<Save>;
> 
>-    FloatRect rect() const { return m_rect; }
>+    // Index in the display list of the corresponding Restore item. 0 if unmatched.
>+    size_t restoreIndex() const { return m_restoreIndex; }
>+    void setRestoreIndex(size_t index) { m_restoreIndex = index; }
> 
> private:
>-    Clip(const FloatRect& rect)
>-        : Item(ItemType::Clip)
>-        , m_rect(rect)
>-    {
>-    }
>+    using SaveBase::SaveBase;
> 
>-    void apply(GraphicsContext&) const override;
>-
>-    FloatRect m_rect;
>-};
>-
>-class ClipOut : public Item {
>-public:
>-    static Ref<ClipOut> create(const FloatRect& rect)
>+    void dump(WTF::TextStream& ts) const override
>     {
>-        return adoptRef(*new ClipOut(rect));
>+        SaveBase::dump(ts);
>+        ts.dumpProperty("restore-index", m_restoreIndex);
>     }
> 
>-    FloatRect rect() const { return m_rect; }
>-
>-private:
>-    ClipOut(const FloatRect& rect)
>-        : Item(ItemType::ClipOut)
>-        , m_rect(rect)
>-    {
>-    }
>+    size_t m_restoreIndex { 0 };
>+};
> 
>-    void apply(GraphicsContext&) const override;
>+using Restore = SettingItem<
>+    ItemType::Restore,
>+    void (GraphicsContext::*)(),
>+    &GraphicsContext::restore
>+>;
> 
>-    FloatRect m_rect;
>-};
>+using SetStateBase = SettingItem<
>+    ItemType::SetState,
>+    void (GraphicsContext::*)(const GraphicsContextStateChange&),
>+    &GraphicsContext::applyStateChange,
>+    GraphicsContextStateChange
>+>;
> 
>-class ClipOutToPath : public Item {
>+class SetState : public SetStateBase {
> public:
>-    static Ref<ClipOutToPath> create(const Path& path)
>-    {
>-        return adoptRef(*new ClipOutToPath(path));
>-    }
>+    constexpr static auto create = SetStateBase::create<SetState>;
>+    using SetStateBase::SetStateBase;
>+    const GraphicsContextStateChange& state() const { return argument<0>(); }
>+};
> 
>-    const Path& path() const { return m_path; }
>+using Translate = SettingItem<
>+    ItemType::Translate,
>+    void (GraphicsContext::*)(float, float),
>+    &GraphicsContext::translate,
>+    float, float
>+>;
>+
>+using Rotate = SettingItem<
>+    ItemType::Rotate,
>+    void (GraphicsContext::*)(float),
>+    &GraphicsContext::rotate,
>+    float
>+>;
>+
>+using Scale = SettingItem<
>+    ItemType::Scale,
>+    void (GraphicsContext::*)(const FloatSize&),
>+    &GraphicsContext::scale,
>+    FloatSize
>+>;
>+
>+using ConcatenateCTM = SettingItem<
>+    ItemType::ConcatenateCTM,
>+    void (GraphicsContext::*)(const AffineTransform&),
>+    &GraphicsContext::concatCTM,
>+    AffineTransform
>+>;
>+
>+using SetLineCap = SettingItem<
>+    ItemType::SetLineCap,
>+    void (GraphicsContext::*)(LineCap),
>+    &GraphicsContext::setLineCap,
>+    LineCap
>+>;
>+
>+using SetLineDash = SettingItem<
>+    ItemType::SetLineDash,
>+    void (GraphicsContext::*)(const DashArray&, float),
>+    &GraphicsContext::setLineDash,
>+    DashArray, float
>+>;
>+
>+using SetLineJoin = SettingItem<
>+    ItemType::SetLineJoin,
>+    void (GraphicsContext::*)(LineJoin),
>+    &GraphicsContext::setLineJoin,
>+    LineJoin
>+>;
>+
>+using SetMiterLimit = SettingItem<
>+    ItemType::SetMiterLimit,
>+    void (GraphicsContext::*)(float),
>+    &GraphicsContext::setMiterLimit,
>+    float
>+>;
>+
>+using ClearShadow = SettingItem<
>+    ItemType::ClearShadow,
>+    void (GraphicsContext::*)(),
>+    &GraphicsContext::clearShadow
>+>;
>+
>+using Clip = SettingItem<
>+    ItemType::Clip,
>+    void (GraphicsContext::*)(const FloatRect&),
>+    &GraphicsContext::clip,
>+    FloatRect
>+>;
>+
>+using ClipOut = SettingItem<
>+    ItemType::ClipOut,
>+    void (GraphicsContext::*)(const FloatRect&),
>+    &GraphicsContext::clipOut,
>+    FloatRect
>+>;
>+
>+using ClipOutToPath = SettingItem<
>+    ItemType::ClipOutToPath,
>+    void (GraphicsContext::*)(const Path&),
>+    &GraphicsContext::clipOut,
>+    const Path
>+>;
>+
>+using ClipPath = SettingItem<
>+    ItemType::ClipPath,
>+    void (GraphicsContext::*)(const Path&, WindRule),
>+    &GraphicsContext::clipPath,
>+    const Path, WindRule
>+>;
>+
>+using ClipToImageBuffer = SettingItem<
>+    ItemType::ClipToImageBuffer,
>+    void (GraphicsContext::*)(const NativeImagePtr&, const FloatRect&, const FloatSize&),
>+    &GraphicsContext::clipToImageBuffer,
>+    NativeImagePtr, FloatRect, FloatSize
>+>;
> 
>-private:
>-    ClipOutToPath(const Path& path)
>-        : Item(ItemType::ClipOutToPath)
>-        , m_path(path)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>+#if USE(CG)
>+using ApplyStrokePattern = SettingItem<
>+    ItemType::ApplyStrokePattern,
>+    void (GraphicsContext::*)(),
>+    &GraphicsContext::applyStrokePattern
>+>;
>+
>+using ApplyFillPattern = SettingItem<
>+    ItemType::ApplyFillPattern,
>+    void (GraphicsContext::*)(),
>+    &GraphicsContext::applyFillPattern
>+>;
>+#endif
> 
>-    const Path m_path;
>-};
>+using ApplyDeviceScaleFactor = SettingItem<
>+    ItemType::ApplyDeviceScaleFactor,
>+    void (GraphicsContext::*)(float),
>+    &GraphicsContext::applyDeviceScaleFactor,
>+    float
>+>;
> 
>-class ClipPath : public Item {
>+// Is DrawingItem because the size of the transparency layer is implicitly the clip bounds.
>+using BeginTransparencyLayer = DrawingItem<
>+    ItemType::BeginTransparencyLayer,
>+    void (GraphicsContext::*)(float),
>+    &GraphicsContext::beginTransparencyLayer,
>+    float
>+>;
>+
>+using EndTransparencyLayer = DrawingItem<
>+    ItemType::EndTransparencyLayer,
>+    void (GraphicsContext::*)(),
>+    &GraphicsContext::endTransparencyLayer
>+>;
>+
>+using DrawGlyphsBase = DrawingItem<
>+    ItemType::DrawGlyphs,
>+    void (GraphicsContext::*)(const Font&, const GlyphBuffer&, unsigned, unsigned, const FloatPoint&, FontSmoothingMode),
>+    &GraphicsContext::drawGlyphs,
>+    Ref<const Font>, GlyphBuffer, unsigned, unsigned, FloatPoint, FontSmoothingMode
>+>;
>+
>+class DrawGlyphs : public DrawGlyphsBase {
> public:
>-    static Ref<ClipPath> create(const Path& path, WindRule windRule)
>+    static Ref<Item> create(Ref<const Font>&& font, const GlyphBuffer& buffer, unsigned from, unsigned numGlyphs, const FloatPoint& point, FontSmoothingMode fontSmoothing)
>     {
>-        return adoptRef(*new ClipPath(path, windRule));
>+        auto subGlyphBuffer = DrawGlyphs::subGlyphBuffer(font.ptr(), buffer, from, numGlyphs);
>+        return DrawGlyphsBase::create(WTFMove(font), WTFMove(subGlyphBuffer), 0, numGlyphs, point, fontSmoothing);
>     }
> 
>-    const Path& path() const { return m_path; }
>-    WindRule windRule() const { return m_windRule; }
>-
> private:
>-    ClipPath(const Path& path, WindRule windRule)
>-        : Item(ItemType::ClipPath)
>-        , m_path(path)
>-        , m_windRule(windRule)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>+    using DrawGlyphsBase::DrawGlyphsBase;
> 
>-    const Path m_path;
>-    WindRule m_windRule;
>-};
>-
>-class DrawGlyphs : public DrawingItem {
>-public:
>-    static Ref<DrawGlyphs> create(const Font& font, const GlyphBufferGlyph* glyphs, const GlyphBufferAdvance* advances, unsigned count, const FloatPoint& blockLocation, const FloatSize& localAnchor, FontSmoothingMode smoothingMode)
>+    static GlyphBuffer subGlyphBuffer(const Font* font, const GlyphBuffer& buffer, unsigned from, unsigned numGlyphs)
>     {
>-        return adoptRef(*new DrawGlyphs(font, glyphs, advances, count, blockLocation, localAnchor, smoothingMode));
>+        GlyphBuffer subBuffer;
>+        const auto* glyphs = buffer.glyphs(from);
>+        const auto* advances = buffer.advances(from);
>+        for (size_t i = 0; i < numGlyphs; ++i)
>+            subBuffer.add(glyphs[i], font, advances[i]);
>+        return subBuffer;
>     }
> 
>-    const FloatPoint& blockLocation() const { return m_blockLocation; }
>-    void setBlockLocation(const FloatPoint& blockLocation) { m_blockLocation = blockLocation; }
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override
>+    {
>+        const auto& font = argument<0>();
>+        float ascent = font->fontMetrics().floatAscent();
>+        float descent = font->fontMetrics().floatDescent();
> 
>-    const FloatSize& localAnchor() const { return m_localAnchor; }
>+        const auto& glyphBuffer = argument<1>();
>+        size_t numGlyphs = glyphBuffer.size();
>+        auto current = argument<4>();
> 
>-    FloatPoint anchorPoint() const { return m_blockLocation + m_localAnchor; }
>+        FloatRect bounds;
>+        for (size_t i = 0; i < numGlyphs; ++i) {
>+            GlyphBufferAdvance advance = glyphBuffer.advanceAt(i);
>+            FloatRect glyphRect = FloatRect(current.x(), current.y() - ascent, advance.width(), ascent + descent);
>+            bounds.unite(glyphRect);
>+            current.move(advance.width(), advance.height());
>+        }
>+        return bounds;
>+    }
>+};
> 
>-    const Vector<GlyphBufferGlyph, 128>& glyphs() const { return m_glyphs; }
>+using DrawImageBase = DrawingItem<
>+    ItemType::DrawImage,
>+    ImageDrawResult (GraphicsContext::*)(Image&, const FloatRect&, const FloatRect&, const ImagePaintingOptions&),
>+    &GraphicsContext::drawImage,
>+    Ref<Image>, FloatRect, FloatRect, ImagePaintingOptions
>+>;
> 
>+class DrawImage : public DrawImageBase {
>+public:
>+    constexpr static auto create = DrawImageBase::create<DrawImage>;
>+    using DrawImageBase::DrawImageBase;
> private:
>-    DrawGlyphs(const Font&, const GlyphBufferGlyph*, const GlyphBufferAdvance*, unsigned count, const FloatPoint& blockLocation, const FloatSize& localAnchor, FontSmoothingMode);
>-
>-    void computeBounds();
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    GlyphBuffer generateGlyphBuffer() const;
>-
>-    Ref<Font> m_font;
>-    Vector<GlyphBufferGlyph, 128> m_glyphs;
>-    Vector<GlyphBufferAdvance, 128> m_advances;
>-    FloatRect m_bounds;
>-    FloatPoint m_blockLocation;
>-    FloatSize m_localAnchor;
>-    FontSmoothingMode m_smoothingMode;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<1>(); }
> };
> 
>-class DrawImage : public DrawingItem {
>-public:
>-    static Ref<DrawImage> create(Image& image, const FloatRect& destination, const FloatRect& source, const ImagePaintingOptions& imagePaintingOptions)
>-    {
>-        return adoptRef(*new DrawImage(image, destination, source, imagePaintingOptions));
>-    }
>-
>-    const Image& image() const { return m_image.get(); }
>-    FloatRect source() const { return m_source; }
>-    FloatRect destination() const { return m_destination; }
>+using DrawTiledImageBase = DrawingItem<
>+    ItemType::DrawTiledImage,
>+    ImageDrawResult (GraphicsContext::*)(Image&, const FloatRect&, const FloatPoint&, const FloatSize&, const FloatSize&, const ImagePaintingOptions&),
>+    &GraphicsContext::drawTiledImage,
>+    Ref<Image>, FloatRect, FloatPoint, FloatSize, FloatSize, ImagePaintingOptions
>+>;
> 
>+class DrawTiledImage : public DrawTiledImageBase {
>+public:
>+    constexpr static auto create = DrawTiledImageBase::create<DrawTiledImage>;
>+    using DrawTiledImageBase::DrawTiledImageBase;
> private:
>-    DrawImage(Image&, const FloatRect& destination, const FloatRect& source, const ImagePaintingOptions&);
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_destination; }
>-
>-    mutable Ref<Image> m_image; // FIXME: Drawing images can cause their animations to progress. This shouldn't have to be mutable.
>-    FloatRect m_destination;
>-    FloatRect m_source;
>-    ImagePaintingOptions m_imagePaintingOptions;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<1>(); }
> };
> 
>-class DrawTiledImage : public DrawingItem {
>-public:
>-    static Ref<DrawTiledImage> create(Image& image, const FloatRect& destination, const FloatPoint& source, const FloatSize& tileSize, const FloatSize& spacing, const ImagePaintingOptions& imagePaintingOptions)
>-    {
>-        return adoptRef(*new DrawTiledImage(image, destination, source, tileSize, spacing, imagePaintingOptions));
>-    }
>-
>-    const Image& image() const { return m_image.get(); }
>-    FloatPoint source() const { return m_source; }
>-    FloatRect destination() const { return m_destination; }
>-
>-    FloatSize tileSize() const { return m_tileSize; }
>-    FloatSize spacing() const { return m_spacing; }
>+using DrawTiledScaledImageBase = DrawingItem<
>+    ItemType::DrawTiledScaledImage,
>+    ImageDrawResult (GraphicsContext::*)(Image&, const FloatRect&, const FloatRect&, const FloatSize&, Image::TileRule, Image::TileRule, const ImagePaintingOptions&),
>+    &GraphicsContext::drawTiledImage,
>+    Ref<Image>, FloatRect, FloatRect, FloatSize, Image::TileRule, Image::TileRule, ImagePaintingOptions
>+>;
> 
>+class DrawTiledScaledImage : public DrawTiledScaledImageBase {
>+public:
>+    constexpr static auto create = DrawTiledScaledImageBase::create<DrawTiledScaledImage>;
>+    using DrawTiledScaledImageBase::DrawTiledScaledImageBase;
> private:
>-    DrawTiledImage(Image&, const FloatRect& destination, const FloatPoint& source, const FloatSize& tileSize, const FloatSize& spacing, const ImagePaintingOptions&);
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_destination; }
>-
>-    mutable Ref<Image> m_image; // FIXME: Drawing images can cause their animations to progress. This shouldn't have to be mutable.
>-    FloatRect m_destination;
>-    FloatPoint m_source;
>-    FloatSize m_tileSize;
>-    FloatSize m_spacing;
>-    ImagePaintingOptions m_imagePaintingOptions;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<1>(); }
> };
> 
>-class DrawTiledScaledImage : public DrawingItem {
>-public:
>-    static Ref<DrawTiledScaledImage> create(Image& image, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions& imagePaintingOptions)
>-    {
>-        return adoptRef(*new DrawTiledScaledImage(image, destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions));
>-    }
>-
>-    const Image& image() const { return m_image.get(); }
>-    FloatRect source() const { return m_source; }
>-    FloatRect destination() const { return m_destination; }
>+#if USE(CG) || USE(DIRECT2D) || USE(CAIRO)
>+using DrawNativeImageBase = DrawingItem<
>+    ItemType::DrawNativeImage,
>+    void (GraphicsContext::*)(const NativeImagePtr&, const FloatSize&, const FloatRect&, const FloatRect&, CompositeOperator, BlendMode, ImageOrientation),
>+    &GraphicsContext::drawNativeImage,
>+    NativeImagePtr, FloatSize, FloatRect, FloatRect, CompositeOperator, BlendMode, ImageOrientation
>+>;
> 
>+class DrawNativeImage : public DrawNativeImageBase {
>+public:
>+    constexpr static auto create = DrawNativeImageBase::create<DrawNativeImage>;
>+    using DrawNativeImageBase::DrawNativeImageBase;
> private:
>-    DrawTiledScaledImage(Image&, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions&);
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_destination; }
>-
>-    mutable Ref<Image> m_image; // FIXME: Drawing images can cause their animations to progress. This shouldn't have to be mutable.
>-    FloatRect m_destination;
>-    FloatRect m_source;
>-    FloatSize m_tileScaleFactor;
>-    Image::TileRule m_hRule;
>-    Image::TileRule m_vRule;
>-    ImagePaintingOptions m_imagePaintingOptions;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<2>(); }
> };
> 
>-#if USE(CG) || USE(CAIRO)
>-class DrawNativeImage : public DrawingItem {
>-public:
>-    static Ref<DrawNativeImage> create(const NativeImagePtr& image, const FloatSize& imageSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator op, BlendMode blendMode, ImageOrientation orientation)
>-    {
>-        return adoptRef(*new DrawNativeImage(image, imageSize, destRect, srcRect, op, blendMode, orientation));
>-    }
>-
>-    FloatRect source() const { return m_srcRect; }
>-    FloatRect destination() const { return m_destination; }
>+using DrawNativeScaledImageBase = DrawingItem<
>+    ItemType::DrawNativeScaledImage,
>+    void (GraphicsContext::*)(const NativeImagePtr&, float, const IntPoint&, const IntRect&),
>+    &GraphicsContext::drawNativeScaledImage,
>+    NativeImagePtr, float, IntPoint, IntRect
>+>;
> 
>+class DrawNativeScaledImage : public DrawNativeScaledImageBase {
>+public:
>+    constexpr static auto create = DrawNativeScaledImageBase::create<DrawNativeScaledImage>;
>+    using DrawNativeScaledImageBase::DrawNativeScaledImageBase;
> private:
>-    DrawNativeImage(const NativeImagePtr&, const FloatSize& selfSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator, BlendMode, ImageOrientation);
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_destination; }
>-
>-#if USE(CG)
>-    RetainPtr<CGImageRef> m_image;
>-#endif
>-    FloatSize m_imageSize;
>-    FloatRect m_destination;
>-    FloatRect m_srcRect;
>-#if USE(CG)
>-    CompositeOperator m_op;
>-    BlendMode m_blendMode;
>-#endif
>-    ImageOrientation m_orientation;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return FloatRect(argument<3>()); }
> };
> #endif
> 
>-class DrawPattern : public DrawingItem {
>-public:
>-    static Ref<DrawPattern> create(Image& image, const FloatRect& destRect, const FloatRect& tileRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator op, BlendMode blendMode)
>-    {
>-        return adoptRef(*new DrawPattern(image, destRect, tileRect, patternTransform, phase, spacing, op, blendMode));
>-    }
>-
>-    const Image& image() const { return m_image.get(); }
>-    const AffineTransform& patternTransform() const { return m_patternTransform; }
>-    FloatRect tileRect() const { return m_tileRect; }
>-    FloatRect destRect() const { return m_destination; }
>-    FloatPoint phase() const { return m_phase; }
>-    FloatSize spacing() const { return m_spacing; }
>+using DrawPatternBase = DrawingItem<
>+    ItemType::DrawPattern,
>+    void (GraphicsContext::*)(Image&, const FloatRect&, const FloatRect&, const AffineTransform&, const FloatPoint&, const FloatSize&, CompositeOperator, BlendMode),
>+    &GraphicsContext::drawPattern,
>+    Ref<Image>, FloatRect, FloatRect, AffineTransform, FloatPoint, FloatSize, CompositeOperator, BlendMode
>+>;
> 
>-private:
>-    DrawPattern(Image&, const FloatRect& destRect, const FloatRect& srcRect, const AffineTransform&, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator, BlendMode = BlendModeNormal);
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_destination; }
>-
>-    mutable Ref<Image> m_image; // FIXME: Drawing images can cause their animations to progress. This shouldn't have to be mutable.
>-    AffineTransform m_patternTransform;
>-    FloatRect m_tileRect;
>-    FloatRect m_destination;
>-    FloatPoint m_phase;
>-    FloatSize m_spacing;
>-    CompositeOperator m_op;
>-    BlendMode m_blendMode;
>-};
>-
>-// Is DrawingItem because the size of the transparency layer is implicitly the clip bounds.
>-class BeginTransparencyLayer : public DrawingItem {
>+class DrawPattern : public DrawPatternBase {
> public:
>-    static Ref<BeginTransparencyLayer> create(float opacity)
>-    {
>-        return adoptRef(*new BeginTransparencyLayer(opacity));
>-    }
>-
>-    float opacity() const { return m_opacity; }
>-
>+    constexpr static auto create = DrawPatternBase::create<DrawPattern>;
>+    using DrawPatternBase::DrawPatternBase;
> private:
>-    BeginTransparencyLayer(float opacity)
>-        : DrawingItem(ItemType::BeginTransparencyLayer)
>-        , m_opacity(opacity)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    float m_opacity;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<1>(); }
> };
> 
>-class EndTransparencyLayer : public DrawingItem {
>-public:
>-    static Ref<EndTransparencyLayer> create()
>-    {
>-        return adoptRef(*new EndTransparencyLayer);
>-    }
>+using DrawRectBase = DrawingItem<
>+    ItemType::DrawRect,
>+    void (GraphicsContext::*)(const FloatRect&, float),
>+    &GraphicsContext::drawRect,
>+    FloatRect, float
>+>;
> 
>+class DrawRect : public DrawRectBase {
>+public:
>+    constexpr static auto create = DrawRectBase::create<DrawRect>;
>+    using DrawRectBase::DrawRectBase;
> private:
>-    EndTransparencyLayer()
>-        : DrawingItem(ItemType::EndTransparencyLayer)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override
>     {
>+        FloatRect rect = argument<0>();
>+        float borderThickness = argument<1>();
>+        rect.inflate(borderThickness / 2);
>+        return rect;
>     }
>-
>-    void apply(GraphicsContext&) const override;
> };
> 
>-class DrawRect : public DrawingItem {
>-public:
>-    static Ref<DrawRect> create(const FloatRect& rect, float borderThickness)
>-    {
>-        return adoptRef(*new DrawRect(rect, borderThickness));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>-    float borderThickness() const { return m_borderThickness; }
>+using DrawLineBase = DrawingItem<
>+    ItemType::DrawLine,
>+    void (GraphicsContext::*)(const FloatPoint&, const FloatPoint&),
>+    &GraphicsContext::drawLine,
>+    FloatPoint, FloatPoint
>+>;
> 
>+class DrawLine : public DrawLineBase {
>+public:
>+    constexpr static auto create = DrawLineBase::create<DrawLine>;
>+    using DrawLineBase::DrawLineBase;
> private:
>-    DrawRect(const FloatRect& rect, float borderThickness)
>-        : DrawingItem(ItemType::DrawRect)
>-        , m_rect(rect)
>-        , m_borderThickness(borderThickness)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override
>     {
>+        FloatRect bounds;
>+        bounds.fitToPoints(argument<0>(), argument<1>());
>+        return bounds;
>     }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>-    float m_borderThickness;
> };
> 
>-class DrawLine : public DrawingItem {
>-public:
>-    static Ref<DrawLine> create(const FloatPoint& point1, const FloatPoint& point2)
>-    {
>-        return adoptRef(*new DrawLine(point1, point2));
>-    }
>-
>-    FloatPoint point1() const { return m_point1; }
>-    FloatPoint point2() const { return m_point2; }
>+using DrawLinesForTextBase = DrawingItem<
>+    ItemType::DrawLinesForText,
>+    void (GraphicsContext::*)(const FloatPoint&, const DashArray&, bool, bool, StrokeStyle),
>+    &GraphicsContext::drawLinesForText,
>+    FloatPoint, DashArray, bool, bool, StrokeStyle
>+>;
> 
>+class DrawLinesForText : public DrawLinesForTextBase {
>+public:
>+    constexpr static auto create = DrawLinesForTextBase::create<DrawLinesForText>;
>+    using DrawLinesForTextBase::DrawLinesForTextBase;
> private:
>-    DrawLine(const FloatPoint& point1, const FloatPoint& point2)
>-        : DrawingItem(ItemType::DrawLine)
>-        , m_point1(point1)
>-        , m_point2(point2)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext& context) const override
>     {
>+        // This function needs to return a value equal to or enclosing what GraphicsContext::computeLineBoundsAndAntialiasingModeForText() returns.
>+        if (!argument<1>().size())
>+            return FloatRect();
>+        FloatRect bounds(argument<0>(), FloatSize(argument<1>().last(), context.strokeThickness()));
>+        bounds.inflate(1); // Account for pixel snapping. FIXME: This isn't perfect, as it doesn't take the CTM into account.
>+        return bounds;
>     }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    FloatPoint m_point1;
>-    FloatPoint m_point2;
> };
> 
>-class DrawLinesForText : public DrawingItem {
>-public:
>-    static Ref<DrawLinesForText> create(const FloatPoint& blockLocation, const FloatSize& localAnchor, const DashArray& widths, bool printing, bool doubleLines, float strokeWidth)
>-    {
>-        return adoptRef(*new DrawLinesForText(blockLocation, localAnchor, widths, printing, doubleLines, strokeWidth));
>-    }
>-
>-    void setBlockLocation(const FloatPoint& blockLocation) { m_blockLocation = blockLocation; }
>-    const FloatPoint& blockLocation() const { return m_blockLocation; }
>-    const FloatSize& localAnchor() const { return m_localAnchor; }
>-    FloatPoint point() const { return m_blockLocation + m_localAnchor; }
>-    const DashArray& widths() const { return m_widths; }
>-    bool isPrinting() const { return m_printing; }
>-    bool doubleLines() const { return m_doubleLines; }
>+using DrawLineForDocumentMarkerBase = DrawingItem<
>+    ItemType::DrawLineForDocumentMarker,
>+    void (GraphicsContext::*)(const FloatPoint&, float, DocumentMarkerLineStyle),
>+    &GraphicsContext::drawLineForDocumentMarker,
>+    FloatPoint, float, DocumentMarkerLineStyle
>+>;
> 
>+class DrawLineForDocumentMarker : public DrawLineForDocumentMarkerBase {
>+public:
>+    constexpr static auto create = DrawLineForDocumentMarkerBase::create<DrawLineForDocumentMarker>;
>+    using DrawLineForDocumentMarkerBase::DrawLineForDocumentMarkerBase;
> private:
>-    DrawLinesForText(const FloatPoint& blockLocation, const FloatSize& localAnchor, const DashArray& widths, bool printing, bool doubleLines, float strokeWidth)
>-        : DrawingItem(ItemType::DrawLinesForText)
>-        , m_blockLocation(blockLocation)
>-        , m_localAnchor(localAnchor)
>-        , m_widths(widths)
>-        , m_strokeWidth(strokeWidth)
>-        , m_printing(printing)
>-        , m_doubleLines(doubleLines)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override
>     {
>+        // This function needs to return a value equal to or enclosing what GraphicsContext::drawLineForDocumentMarker() returns.
>+        FloatRect bounds(argument<0>(), FloatSize(argument<1>(), cMisspellingLineThickness));
>+        bounds.inflate(cMisspellingLineThickness); // Account for "misspelling dot" snapping.
>+        return bounds;
>     }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    FloatPoint m_blockLocation;
>-    FloatSize m_localAnchor;
>-    DashArray m_widths;
>-    float m_strokeWidth;
>-    bool m_printing;
>-    bool m_doubleLines;
> };
> 
>-class DrawLineForDocumentMarker : public DrawingItem {
>-public:
>-    static Ref<DrawLineForDocumentMarker> create(const FloatPoint& point, float width, DocumentMarkerLineStyle style)
>-    {
>-        return adoptRef(*new DrawLineForDocumentMarker(point, width, style));
>-    }
>-
>-    FloatPoint point() const { return m_point; }
>-    float width() const { return m_width; }
>+using DrawEllipseBase = DrawingItem<
>+    ItemType::DrawEllipse,
>+    void (GraphicsContext::*)(const FloatRect&),
>+    &GraphicsContext::drawEllipse,
>+    FloatRect
>+>;
> 
>+class DrawEllipse : public DrawEllipseBase {
>+public:
>+    constexpr static auto create = DrawEllipseBase::create<DrawEllipse>;
>+    using DrawEllipseBase::DrawEllipseBase;
> private:
>-    DrawLineForDocumentMarker(const FloatPoint& point, float width, DocumentMarkerLineStyle style)
>-        : DrawingItem(ItemType::DrawLineForDocumentMarker)
>-        , m_point(point)
>-        , m_width(width)
>-        , m_style(style)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    FloatPoint m_point;
>-    float m_width;
>-    DocumentMarkerLineStyle m_style;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-class DrawEllipse : public DrawingItem {
>+#if USE(CG)
>+using DrawPathBase = DrawingItem<
>+    ItemType::DrawPath,
>+    void (GraphicsContext::*)(const Path&),
>+    &GraphicsContext::drawPath,
>+    const Path
>+>;
>+
>+class DrawPath : public DrawPathBase {
> public:
>-    static Ref<DrawEllipse> create(const FloatRect& rect)
>-    {
>-        return adoptRef(*new DrawEllipse(rect));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>-
>+    constexpr static auto create = DrawPathBase::create<DrawPath>;
>+    using DrawPathBase::DrawPathBase;
> private:
>-    DrawEllipse(const FloatRect& rect)
>-        : DrawingItem(ItemType::DrawEllipse)
>-        , m_rect(rect)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>().fastBoundingRect(); }
> };
>+#endif
> 
>-class DrawPath : public DrawingItem {
>-public:
>-    static Ref<DrawPath> create(const Path& path)
>-    {
>-        return adoptRef(*new DrawPath(path));
>-    }
>-
>-    const Path& path() const { return m_path; }
>+using DrawFocusRingPathBase = DrawingItem<
>+    ItemType::DrawFocusRingPath,
>+    void (GraphicsContext::*)(const Path&, float, float, const Color&),
>+    &GraphicsContext::drawFocusRing,
>+    const Path, float, float, Color
>+>;
> 
>+class DrawFocusRingPath : public DrawFocusRingPathBase {
>+public:
>+    constexpr static auto create = DrawFocusRingPathBase::create<DrawFocusRingPath>;
>+    using DrawFocusRingPathBase::DrawFocusRingPathBase;
> private:
>-    DrawPath(const Path& path)
>-        : DrawingItem(ItemType::DrawPath)
>-        , m_path(path)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override
>     {
>+        FloatRect bounds = argument<0>().fastBoundingRect();
>+        bounds.inflate(s_platformFocusRingWidth);
>+        return bounds;
>     }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_path.fastBoundingRect(); }
>-
>-    const Path m_path;
> };
> 
>-class DrawFocusRingPath : public DrawingItem {
>-public:
>-    static Ref<DrawFocusRingPath> create(const Path& path, float width, float offset, const Color& color)
>-    {
>-        return adoptRef(*new DrawFocusRingPath(path, width, offset, color));
>-    }
>-
>-    const Path& path() const { return m_path; }
>-    float width() const { return m_width; }
>-    float offset() const { return m_offset; }
>-    const Color& color() const { return m_color; }
>+using DrawFocusRingRectsBase = DrawingItem<
>+    ItemType::DrawFocusRingRects,
>+    void (GraphicsContext::*)(const Vector<FloatRect>&, float, float, const Color&),
>+    &GraphicsContext::drawFocusRing,
>+    Vector<FloatRect>, float, float, Color
>+>;
> 
>+class DrawFocusRingRects : public DrawFocusRingRectsBase {
>+public:
>+    constexpr static auto create = DrawFocusRingRectsBase::create<DrawFocusRingRects>;
>+    using DrawFocusRingRectsBase::DrawFocusRingRectsBase;
> private:
>-    DrawFocusRingPath(const Path& path, float width, float offset, const Color& color)
>-        : DrawingItem(ItemType::DrawFocusRingPath)
>-        , m_path(path)
>-        , m_width(width)
>-        , m_offset(offset)
>-        , m_color(color)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override
>     {
>+        FloatRect bounds;
>+        for (auto& rect : argument<0>())
>+            bounds.unite(rect);
>+        bounds.inflate(s_platformFocusRingWidth);
>+        return bounds;
>     }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    const Path m_path;
>-    float m_width;
>-    float m_offset;
>-    Color m_color;
> };
> 
>-class DrawFocusRingRects : public DrawingItem {
>+using DrawIconBase = DrawingItem<
>+    ItemType::DrawIcon,
>+    void (GraphicsContext::*)(Icon&, const FloatRect&),
>+    &GraphicsContext::drawIcon,
>+    Ref<Icon>, FloatRect
>+>;
>+    
>+class DrawIcon : public DrawIconBase {
> public:
>-    static Ref<DrawFocusRingRects> create(const Vector<FloatRect>& rects, float width, float offset, const Color& color)
>-    {
>-        return adoptRef(*new DrawFocusRingRects(rects, width, offset, color));
>-    }
>-
>-    const Vector<FloatRect> rects() const { return m_rects; }
>-    float width() const { return m_width; }
>-    float offset() const { return m_offset; }
>-    const Color& color() const { return m_color; }
>-
>+    constexpr static auto create = DrawIconBase::create<DrawIcon>;
>+    using DrawIconBase::DrawIconBase;
> private:
>-    DrawFocusRingRects(const Vector<FloatRect>& rects, float width, float offset, const Color& color)
>-        : DrawingItem(ItemType::DrawFocusRingRects)
>-        , m_rects(rects)
>-        , m_width(width)
>-        , m_offset(offset)
>-        , m_color(color)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    Vector<FloatRect> m_rects;
>-    float m_width;
>-    float m_offset;
>-    Color m_color;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<1>(); }
> };
> 
>-class FillRect : public DrawingItem {
>+using DrawWidgetBase = DrawingItem<
>+    ItemType::DrawWidget,
>+    void (GraphicsContext::*)(Widget&, const IntRect&),
>+    &GraphicsContext::drawWidget,
>+    Ref<Widget>, IntRect
>+>;
>+    
>+class DrawWidget : public DrawWidgetBase {
> public:
>-    static Ref<FillRect> create(const FloatRect& rect)
>-    {
>-        return adoptRef(*new FillRect(rect));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>-
>+    constexpr static auto create = DrawWidgetBase::create<DrawWidget>;
>+    using DrawWidgetBase::DrawWidgetBase;
> private:
>-    FillRect(const FloatRect& rect)
>-        : DrawingItem(ItemType::FillRect)
>-        , m_rect(rect)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return FloatRect(argument<1>()); }
> };
>-
>-// FIXME: Make these inherit from FillRect proper.
>-class FillRectWithColor : public DrawingItem {
>+    
>+using DrawScrollbarBase = DrawingItem<
>+    ItemType::DrawScrollbar,
>+    void (GraphicsContext::*)(Scrollbar&, const IntRect&),
>+    &GraphicsContext::drawScrollbar,
>+    Ref<Scrollbar>, IntRect
>+>;
>+    
>+class DrawScrollbar : public DrawScrollbarBase {
> public:
>-    static Ref<FillRectWithColor> create(const FloatRect& rect, const Color& color)
>-    {
>-        return adoptRef(*new FillRectWithColor(rect, color));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>-    const Color& color() const { return m_color; }
>-
>+    constexpr static auto create = DrawScrollbarBase::create<DrawScrollbar>;
>+    using DrawScrollbarBase::DrawScrollbarBase;
> private:
>-    FillRectWithColor(const FloatRect& rect, const Color& color)
>-        : DrawingItem(ItemType::FillRectWithColor)
>-        , m_rect(rect)
>-        , m_color(color)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>-    Color m_color;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return FloatRect(argument<1>()); }
> };
>-
>-class FillRectWithGradient : public DrawingItem {
>+    
>+using DrawThemeBase = DrawingItem<
>+    ItemType::DrawTheme,
>+    void (GraphicsContext::*)(Theme&, ControlPart, ControlStates&, const FloatRect&, float, void*, float, float, bool, bool),
>+    &GraphicsContext::drawTheme,
>+    Theme&, ControlPart, ControlStates&, FloatRect, float, void*, float, float, bool, bool
>+>;
>+    
>+class DrawTheme : public DrawThemeBase {
> public:
>-    static Ref<FillRectWithGradient> create(const FloatRect& rect, Gradient& gradient)
>-    {
>-        return adoptRef(*new FillRectWithGradient(rect, gradient));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>-
>+    constexpr static auto create = DrawThemeBase::create<DrawTheme>;
>+    using DrawThemeBase::DrawThemeBase;
> private:
>-    FillRectWithGradient(const FloatRect& rect, Gradient& gradient)
>-        : DrawingItem(ItemType::FillRectWithGradient)
>-        , m_rect(rect)
>-        , m_gradient(gradient)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>-    mutable Ref<Gradient> m_gradient; // FIXME: Make this not mutable
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<3>(); }
> };
> 
>-class FillCompositedRect : public DrawingItem {
>-public:
>-    static Ref<FillCompositedRect> create(const FloatRect& rect, const Color& color, CompositeOperator op, BlendMode blendMode)
>-    {
>-        return adoptRef(*new FillCompositedRect(rect, color, op, blendMode));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>-    const Color& color() const { return m_color; }
>-    CompositeOperator compositeOperator() const { return m_op; }
>-    BlendMode blendMode() const { return m_blendMode; }
>+using FillRectBase = DrawingItem<
>+    ItemType::FillRect,
>+    void (GraphicsContext::*)(const FloatRect&),
>+    &GraphicsContext::fillRect,
>+    FloatRect
>+>;
> 
>+class FillRect : public FillRectBase {
>+public:
>+    constexpr static auto create = FillRectBase::create<FillRect>;
>+    using FillRectBase::FillRectBase;
> private:
>-    FillCompositedRect(const FloatRect& rect, const Color& color, CompositeOperator op, BlendMode blendMode)
>-        : DrawingItem(ItemType::FillCompositedRect)
>-        , m_rect(rect)
>-        , m_color(color)
>-        , m_op(op)
>-        , m_blendMode(blendMode)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>-    Color m_color;
>-    CompositeOperator m_op;
>-    BlendMode m_blendMode;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-class FillRoundedRect : public DrawingItem {
>-public:
>-    static Ref<FillRoundedRect> create(const FloatRoundedRect& rect, const Color& color, BlendMode blendMode)
>-    {
>-        return adoptRef(*new FillRoundedRect(rect, color, blendMode));
>-    }
>-
>-    const FloatRoundedRect& roundedRect() const { return m_rect; }
>-    const Color& color() const { return m_color; }
>-    BlendMode blendMode() const { return m_blendMode; }
>+using FillRectWithColorBase = DrawingItem<
>+    ItemType::FillRectWithColor,
>+    void (GraphicsContext::*)(const FloatRect&, const Color&),
>+    &GraphicsContext::fillRect,
>+    FloatRect, Color
>+>;
> 
>+class FillRectWithColor : public FillRectWithColorBase {
>+public:
>+    constexpr static auto create = FillRectWithColorBase::create<FillRectWithColor>;
>+    using FillRectWithColorBase::FillRectWithColorBase;
> private:
>-    FillRoundedRect(const FloatRoundedRect& rect, const Color& color, BlendMode blendMode)
>-        : DrawingItem(ItemType::FillRoundedRect)
>-        , m_rect(rect)
>-        , m_color(color)
>-        , m_blendMode(blendMode)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect.rect(); }
>-
>-    FloatRoundedRect m_rect;
>-    Color m_color;
>-    BlendMode m_blendMode;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-class FillRectWithRoundedHole : public DrawingItem {
>-public:
>-    static Ref<FillRectWithRoundedHole> create(const FloatRect& rect, const FloatRoundedRect& roundedHoleRect, const Color& color)
>-    {
>-        return adoptRef(*new FillRectWithRoundedHole(rect, roundedHoleRect, color));
>-    }
>-
>-    const FloatRect& rect() const { return m_rect; }
>-    const FloatRoundedRect& roundedHoleRect() const { return m_roundedHoleRect; }
>-    const Color& color() const { return m_color; }
>+using FillRectWithGradientBase = DrawingItem<
>+    ItemType::FillRectWithGradient,
>+    void (GraphicsContext::*)(const FloatRect&, Gradient&),
>+    &GraphicsContext::fillRect,
>+    FloatRect, Ref<Gradient>
>+>;
> 
>+class FillRectWithGradient : public FillRectWithGradientBase {
>+public:
>+    constexpr static auto create = FillRectWithGradientBase::create<FillRectWithGradient>;
>+    using FillRectWithGradientBase::FillRectWithGradientBase;
> private:
>-    FillRectWithRoundedHole(const FloatRect& rect, const FloatRoundedRect& roundedHoleRect, const Color& color)
>-        : DrawingItem(ItemType::FillRectWithRoundedHole)
>-        , m_rect(rect)
>-        , m_roundedHoleRect(roundedHoleRect)
>-        , m_color(color)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>-    FloatRoundedRect m_roundedHoleRect;
>-    Color m_color;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-class FillPath : public DrawingItem {
>-public:
>-    static Ref<FillPath> create(const Path& path)
>-    {
>-        return adoptRef(*new FillPath(path));
>-    }
>-
>-    const Path& path() const { return m_path; }
>+using FillCompositedRectBase = DrawingItem<
>+    ItemType::FillCompositedRect,
>+    void (GraphicsContext::*)(const FloatRect&, const Color&, CompositeOperator, BlendMode),
>+    &GraphicsContext::fillRect,
>+    FloatRect, Color, CompositeOperator, BlendMode
>+>;
> 
>+class FillCompositedRect : public FillCompositedRectBase {
>+public:
>+    constexpr static auto create = FillCompositedRectBase::create<FillCompositedRect>;
>+    using FillCompositedRectBase::FillCompositedRectBase;
> private:
>-    FillPath(const Path& path)
>-        : DrawingItem(ItemType::FillPath)
>-        , m_path(path)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_path.fastBoundingRect(); }
>-
>-    const Path m_path;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-class FillEllipse : public DrawingItem {
>-public:
>-    static Ref<FillEllipse> create(const FloatRect& rect)
>-    {
>-        return adoptRef(*new FillEllipse(rect));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>+using FillRoundedRectBase = DrawingItem<
>+    ItemType::FillRoundedRect,
>+    void (GraphicsContext::*)(const FloatRoundedRect&, const Color&, BlendMode),
>+    &GraphicsContext::fillRoundedRect,
>+    FloatRoundedRect, Color, BlendMode
>+>;
> 
>+class FillRoundedRect : public FillRoundedRectBase {
>+public:
>+    constexpr static auto create = FillRoundedRectBase::create<FillRoundedRect>;
>+    using FillRoundedRectBase::FillRoundedRectBase;
> private:
>-    FillEllipse(const FloatRect& rect)
>-        : DrawingItem(ItemType::FillEllipse)
>-        , m_rect(rect)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>().rect(); }
> };
> 
>-class StrokeRect : public DrawingItem {
>-public:
>-    static Ref<StrokeRect> create(const FloatRect& rect, float lineWidth)
>-    {
>-        return adoptRef(*new StrokeRect(rect, lineWidth));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>-    float lineWidth() const { return m_lineWidth; }
>+using FillRectWithRoundedHoleBase = DrawingItem<
>+    ItemType::FillRectWithRoundedHole,
>+    void (GraphicsContext::*)(const FloatRect&, const FloatRoundedRect&, const Color&),
>+    &GraphicsContext::fillRectWithRoundedHole,
>+    FloatRect, FloatRoundedRect, Color
>+>;
> 
>+class FillRectWithRoundedHole : public FillRectWithRoundedHoleBase {
>+public:
>+    constexpr static auto create = FillRectWithRoundedHoleBase::create<FillRectWithRoundedHole>;
>+    using FillRectWithRoundedHoleBase::FillRectWithRoundedHoleBase;
> private:
>-    StrokeRect(const FloatRect& rect, float lineWidth)
>-        : DrawingItem(ItemType::StrokeRect)
>-        , m_rect(rect)
>-        , m_lineWidth(lineWidth)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    FloatRect m_rect;
>-    float m_lineWidth;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-class StrokePath : public DrawingItem {
>-public:
>-    static Ref<StrokePath> create(const Path& path)
>-    {
>-        return adoptRef(*new StrokePath(path));
>-    }
>-
>-    const Path& path() const { return m_path; }
>+using FillPathBase = DrawingItem<
>+    ItemType::FillPath,
>+    void (GraphicsContext::*)(const Path&),
>+    &GraphicsContext::fillPath,
>+    const Path
>+>;
> 
>+class FillPath : public FillPathBase {
>+public:
>+    constexpr static auto create = FillPathBase::create<FillPath>;
>+    using FillPathBase::FillPathBase;
> private:
>-    StrokePath(const Path& path)
>-        : DrawingItem(ItemType::StrokePath)
>-        , m_path(path)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    const Path m_path;
>-    FloatPoint m_blockLocation;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>().fastBoundingRect(); }
> };
> 
>-class StrokeEllipse : public DrawingItem {
>-public:
>-    static Ref<StrokeEllipse> create(const FloatRect& rect)
>-    {
>-        return adoptRef(*new StrokeEllipse(rect));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>+using FillEllipseBase = DrawingItem<
>+    ItemType::FillEllipse,
>+    void (GraphicsContext::*)(const FloatRect&),
>+    &GraphicsContext::fillEllipse,
>+    FloatRect
>+>;
> 
>+class FillEllipse : public FillEllipseBase {
>+public:
>+    constexpr static auto create = FillEllipseBase::create<FillEllipse>;
>+    using FillEllipseBase::FillEllipseBase;
> private:
>-    StrokeEllipse(const FloatRect& rect)
>-        : DrawingItem(ItemType::StrokeEllipse)
>-        , m_rect(rect)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override;
>-
>-    FloatRect m_rect;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-class ClearRect : public DrawingItem {
>-public:
>-    static Ref<ClearRect> create(const FloatRect& rect)
>-    {
>-        return adoptRef(*new ClearRect(rect));
>-    }
>-
>-    FloatRect rect() const { return m_rect; }
>+using StrokeRectBase = DrawingItem<
>+    ItemType::StrokeRect,
>+    void (GraphicsContext::*)(const FloatRect&, float),
>+    &GraphicsContext::strokeRect,
>+    FloatRect, float
>+>;
> 
>+class StrokeRect : public StrokeRectBase {
>+public:
>+    constexpr static auto create = StrokeRectBase::create<StrokeRect>;
>+    using StrokeRectBase::StrokeRectBase;
> private:
>-    ClearRect(const FloatRect& rect)
>-        : DrawingItem(ItemType::ClearRect)
>-        , m_rect(rect)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override
>     {
>+        FloatRect bounds = argument<0>();
>+        bounds.expand(argument<1>(), argument<1>());
>+        return bounds;
>     }
>-
>-    void apply(GraphicsContext&) const override;
>-    std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return m_rect; }
>-
>-    FloatRect m_rect;
> };
> 
>-#if USE(CG)
>-class ApplyStrokePattern : public Item {
>-public:
>-    static Ref<ApplyStrokePattern> create()
>-    {
>-        return adoptRef(*new ApplyStrokePattern);
>-    }
>+using StrokePathBase = DrawingItem<
>+    ItemType::StrokePath,
>+    void (GraphicsContext::*)(const Path&),
>+    &GraphicsContext::strokePath,
>+    const Path
>+>;
> 
>+class StrokePath : public StrokePathBase {
>+public:
>+    constexpr static auto create = StrokePathBase::create<StrokePath>;
>+    using StrokePathBase::StrokePathBase;
> private:
>-    ApplyStrokePattern()
>-        : Item(ItemType::ApplyStrokePattern)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext& context) const override
>     {
>-    }
>+        // FIXME: Need to take stroke thickness into account correctly, via CGPathByStrokingPath().
>+        float strokeThickness = context.strokeThickness();
> 
>-    void apply(GraphicsContext&) const override;
>+        FloatRect bounds = argument<0>().boundingRect();
>+        bounds.expand(strokeThickness, strokeThickness);
>+        return bounds;
>+    }
> };
> 
>-class ApplyFillPattern : public Item {
>-public:
>-    static Ref<ApplyFillPattern> create()
>-    {
>-        return adoptRef(*new ApplyFillPattern);
>-    }
>+using StrokeEllipseBase = DrawingItem<
>+    ItemType::StrokeEllipse,
>+    void (GraphicsContext::*)(const FloatRect&),
>+    &GraphicsContext::strokeEllipse,
>+    FloatRect
>+>;
> 
>+class StrokeEllipse : public StrokeEllipseBase {
>+public:
>+    constexpr static auto create = StrokeEllipseBase::create<StrokeEllipse>;
>+    using StrokeEllipseBase::StrokeEllipseBase;
> private:
>-    ApplyFillPattern()
>-        : Item(ItemType::ApplyFillPattern)
>+    const std::optional<FloatRect> localBounds(const GraphicsContext& context) const override
>     {
>+        float strokeThickness = context.strokeThickness();
>+        FloatRect bounds = argument<0>();
>+        bounds.expand(strokeThickness, strokeThickness);
>+        return bounds;
>     }
>-
>-    void apply(GraphicsContext&) const override;
> };
>-#endif
>-
>-class ApplyDeviceScaleFactor : public Item {
>-public:
>-    static Ref<ApplyDeviceScaleFactor> create(float scaleFactor)
>-    {
>-        return adoptRef(*new ApplyDeviceScaleFactor(scaleFactor));
>-    }
> 
>-    float scaleFactor() const { return m_scaleFactor; }
>+using ClearRectBase = DrawingItem<
>+    ItemType::ClearRect,
>+    void (GraphicsContext::*)(const FloatRect&),
>+    &GraphicsContext::clearRect,
>+    FloatRect
>+>;
> 
>+class ClearRect : public ClearRectBase {
>+public:
>+    constexpr static auto create = ClearRectBase::create<ClearRect>;
>+    using ClearRectBase::ClearRectBase;
> private:
>-    ApplyDeviceScaleFactor(float scaleFactor)
>-        : Item(ItemType::ApplyDeviceScaleFactor)
>-        , m_scaleFactor(scaleFactor)
>-    {
>-    }
>-
>-    void apply(GraphicsContext&) const override;
>-
>-    float m_scaleFactor;
>+    const std::optional<FloatRect> localBounds(const GraphicsContext&) const override { return argument<0>(); }
> };
> 
>-WTF::TextStream& operator<<(WTF::TextStream&, const Item&);
>+inline WTF::TextStream& operator<<(WTF::TextStream& ts, const Item& item)
>+{
>+    TextStream::GroupScope group(ts);
>+    item.dump(ts);
>+    return ts;
>+}
>+
>+inline WTF::CString Item::dump() const
>+{
>+    TextStream ts;
>+    ts << *this;
>+    return ts.release().utf8();
>+}
> 
> } // namespace DisplayList
> } // namespace WebCore
> 
>-
>-#define SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_DRAWINGITEM(ToValueTypeName, predicate) \
>-SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::DisplayList::ToValueTypeName) \
>-    static bool isType(const WebCore::DisplayList::Item& object) { return object.predicate; } \
>+#define SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_GEOMETRYITEM(ToValueTypeName, predicate) \
>+    SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::DisplayList::ToValueTypeName) \
>+    static bool isType(const WebCore::DisplayList::Item& item) { return item.predicate; } \
> SPECIALIZE_TYPE_TRAITS_END()
> 
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_DRAWINGITEM(DrawingItem, isDrawingItem())
>+SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_GEOMETRYITEM(GeometryItem, isGeometryItem())
> 
> #define SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ToValueTypeName) \
>-SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::DisplayList::ToValueTypeName) \
>+    SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::DisplayList::ToValueTypeName) \
>     static bool isType(const WebCore::DisplayList::Item& item) { return item.type() == WebCore::DisplayList::ItemType::ToValueTypeName; } \
> SPECIALIZE_TYPE_TRAITS_END()
> 
> SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(Save)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(Restore)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(Translate)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(Rotate)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(Scale)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ConcatenateCTM)
> SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(SetState)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(SetLineCap)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(SetLineDash)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(SetLineJoin)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(SetMiterLimit)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(Clip)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ClipOut)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ClipOutToPath)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ClipPath)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawGlyphs)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawImage)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawTiledImage)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawTiledScaledImage)
>-#if USE(CG) || USE(CAIRO)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawNativeImage)
>-#endif
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawPattern)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawRect)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawLine)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawLinesForText)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawLineForDocumentMarker)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawEllipse)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawPath)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawFocusRingPath)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(DrawFocusRingRects)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillRect)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillRectWithColor)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillRectWithGradient)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillCompositedRect)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillRoundedRect)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillRectWithRoundedHole)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillPath)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(FillEllipse)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(StrokeRect)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(StrokePath)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(StrokeEllipse)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ClearRect)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(BeginTransparencyLayer)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(EndTransparencyLayer)
>-#if USE(CG)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ApplyStrokePattern)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ApplyFillPattern)
>-#endif
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ApplyDeviceScaleFactor)
>-SPECIALIZE_TYPE_TRAITS_DISPLAYLIST_ITEM(ClearShadow)
>-
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.cpp b/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.cpp
>index ea27326b561f19de22473e3bac83f44faa092ffd..2265b37141404473645049a62dd26c76c24015a2 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.cpp
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.cpp
>@@ -1,5 +1,5 @@
> /*
>- * Copyright (C) 2016 Apple Inc. All rights reserved.
>+ * Copyright (C) 2016-2018 Apple Inc. All rights reserved.
>  *
>  * Redistribution and use in source and binary forms, with or without
>  * modification, are permitted provided that the following conditions
>@@ -52,21 +52,22 @@ Recorder::~Recorder()
> 
> void Recorder::willAppendItem(const Item& item)
> {
>-    if (item.isDrawingItem()
> #if USE(CG)
>-        || item.type() == ItemType::ApplyStrokePattern || item.type() == ItemType::ApplyStrokePattern
>+    if (!is<GeometryItem>(item) && item.type() != ItemType::ApplyStrokePattern && item.type() != ItemType::ApplyFillPattern)
>+#else
>+    if (!is<GeometryItem>(item))
> #endif
>-    ) {
>-        GraphicsContextStateChange& stateChanges = currentState().stateChange;
>-        GraphicsContextState::StateChangeFlags changesFromLastState = stateChanges.changesFromState(currentState().lastDrawingState);
>-        if (changesFromLastState) {
>-            LOG_WITH_STREAM(DisplayLists, stream << "pre-drawing, saving state " << GraphicsContextStateChange(stateChanges.m_state, changesFromLastState));
>-            m_displayList.append(SetState::create(stateChanges.m_state, changesFromLastState));
>-            stateChanges.m_changeFlags = 0;
>-            currentState().lastDrawingState = stateChanges.m_state;
>-        }
>-        currentState().wasUsedForDrawing = true;
>+        return;
>+    
>+    GraphicsContextStateChange& stateChanges = currentState().stateChange;
>+    GraphicsContextState::StateChangeFlags changesFromLastState = stateChanges.changesFromState(currentState().lastDrawingState);
>+    if (changesFromLastState) {
>+        LOG_WITH_STREAM(DisplayLists, stream << "pre-drawing, saving state " << GraphicsContextStateChange(stateChanges.m_state, changesFromLastState));
>+        m_displayList.append(SetState::create(GraphicsContextStateChange(stateChanges.m_state, changesFromLastState)));
>+        stateChanges.m_changeFlags = 0;
>+        currentState().lastDrawingState = stateChanges.m_state;
>     }
>+    currentState().wasUsedForDrawing = true;
> }
> 
> void Recorder::updateState(const GraphicsContextState& state, GraphicsContextState::StateChangeFlags flags)
>@@ -99,44 +100,50 @@ void Recorder::setMiterLimit(float miterLimit)
>     appendItem(SetMiterLimit::create(miterLimit));
> }
> 
>-void Recorder::drawGlyphs(const Font& font, const GlyphBuffer& glyphBuffer, unsigned from, unsigned numGlyphs, const FloatPoint& startPoint, FontSmoothingMode smoothingMode)
>+void Recorder::drawGlyphs(const Font& font, const GlyphBuffer& glyphBuffer, unsigned from, unsigned numGlyphs, const FloatPoint& startPoint, FontSmoothingMode fontSmoothing)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawGlyphs::create(font, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs, FloatPoint(), toFloatSize(startPoint), smoothingMode)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawGlyphs::create(makeRef(font), glyphBuffer, from, numGlyphs, startPoint, fontSmoothing)));
>     updateItemExtent(newItem);
> }
> 
> ImageDrawResult Recorder::drawImage(Image& image, const FloatRect& destination, const FloatRect& source, const ImagePaintingOptions& imagePaintingOptions)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawImage::create(image, destination, source, imagePaintingOptions)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawImage::create(makeRef(image), destination, source, imagePaintingOptions)));
>     updateItemExtent(newItem);
>     return ImageDrawResult::DidRecord;
> }
> 
> ImageDrawResult Recorder::drawTiledImage(Image& image, const FloatRect& destination, const FloatPoint& source, const FloatSize& tileSize, const FloatSize& spacing, const ImagePaintingOptions& imagePaintingOptions)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawTiledImage::create(image, destination, source, tileSize, spacing, imagePaintingOptions)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawTiledImage::create(makeRef(image), destination, source, tileSize, spacing, imagePaintingOptions)));
>     updateItemExtent(newItem);
>     return ImageDrawResult::DidRecord;
> }
> 
> ImageDrawResult Recorder::drawTiledImage(Image& image, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions& imagePaintingOptions)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawTiledScaledImage::create(image, destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawTiledScaledImage::create(makeRef(image), destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions)));
>     updateItemExtent(newItem);
>     return ImageDrawResult::DidRecord;
> }
> 
>-#if USE(CG) || USE(CAIRO)
>+#if USE(CG) || USE(DIRECT2D) || USE(CAIRO)
> void Recorder::drawNativeImage(const NativeImagePtr& image, const FloatSize& imageSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator op, BlendMode blendMode, ImageOrientation orientation)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawNativeImage::create(image, imageSize, destRect, srcRect, op, blendMode, orientation)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawNativeImage::create(image, imageSize, destRect, srcRect, op, blendMode, orientation)));
>     updateItemExtent(newItem);
> }
>+    
>+void Recorder::drawNativeScaledImage(const NativeImagePtr& image, float scaleFactor, const IntPoint& destination, const IntRect& source)
>+{
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawNativeScaledImage::create(image, scaleFactor, destination, source)));
>+    updateItemExtent(newItem);
>+}    
> #endif
> 
> void Recorder::drawPattern(Image& image, const FloatRect& destRect, const FloatRect& tileRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator op, BlendMode blendMode)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawPattern::create(image, destRect, tileRect, patternTransform, phase, spacing, op, blendMode)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawPattern::create(makeRef(image), destRect, tileRect, patternTransform, phase, spacing, op, blendMode)));
>     updateItemExtent(newItem);
> }
> 
>@@ -209,7 +216,7 @@ AffineTransform Recorder::getCTM(GraphicsContext::IncludeDeviceScale)
> 
> void Recorder::beginTransparencyLayer(float opacity)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(BeginTransparencyLayer::create(opacity)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(BeginTransparencyLayer::create(opacity)));
>     updateItemExtent(newItem);
> }
> 
>@@ -220,121 +227,147 @@ void Recorder::endTransparencyLayer()
> 
> void Recorder::drawRect(const FloatRect& rect, float borderThickness)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawRect::create(rect, borderThickness)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawRect::create(rect, borderThickness)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::drawLine(const FloatPoint& point1, const FloatPoint& point2)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawLine::create(point1, point2)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawLine::create(point1, point2)));
>     updateItemExtent(newItem);
> }
> 
>-void Recorder::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleLines, float strokeThickness)
>+void Recorder::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleLines, StrokeStyle strokeStyle)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawLinesForText::create(FloatPoint(), toFloatSize(point), widths, printing, doubleLines, strokeThickness)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawLinesForText::create(point, widths, printing, doubleLines, strokeStyle)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::drawLineForDocumentMarker(const FloatPoint& point, float width, DocumentMarkerLineStyle style)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawLineForDocumentMarker::create(point, width, style)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawLineForDocumentMarker::create(point, width, style)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::drawEllipse(const FloatRect& rect)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawEllipse::create(rect)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawEllipse::create(rect)));
>     updateItemExtent(newItem);
> }
> 
>+#if USE(CG)
> void Recorder::drawPath(const Path& path)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawPath::create(path)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawPath::create(path)));
>     updateItemExtent(newItem);
> }
>+#endif
> 
> void Recorder::drawFocusRing(const Path& path, float width, float offset, const Color& color)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawFocusRingPath::create(path, width, offset, color)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawFocusRingPath::create(path, width, offset, color)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::drawFocusRing(const Vector<FloatRect>& rects, float width, float offset, const Color& color)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(DrawFocusRingRects::create(rects, width, offset, color)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawFocusRingRects::create(rects, width, offset, color)));
>+    updateItemExtent(newItem);
>+}
>+    
>+void Recorder::drawIcon(Icon& icon, const FloatRect& rect)
>+{
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawIcon::create(makeRef(icon), rect)));
>+    updateItemExtent(newItem);
>+}
>+
>+void Recorder::drawWidget(Widget& widget, const IntRect& rect)
>+{
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawWidget::create(makeRef(widget), rect)));
>+    updateItemExtent(newItem);
>+}
>+
>+void Recorder::drawScrollbar(Scrollbar& scrollbar, const IntRect& rect)
>+{
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawScrollbar::create(makeRef(scrollbar), rect)));
>+    updateItemExtent(newItem);
>+}
>+
>+void Recorder::drawTheme(Theme& theme, ControlPart part, ControlStates& states, const FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance)
>+{
>+    auto& newItem = downcast<GeometryItem>(appendItem(DrawTheme::create(theme, part, states, zoomedRect, zoomFactor, scrollView, deviceScaleFactor, pageScaleFactor, useSystemAppearance, useDarkAppearance)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillRect(const FloatRect& rect)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillRect::create(rect)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillRect::create(rect)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillRect(const FloatRect& rect, const Color& color)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillRectWithColor::create(rect, color)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillRectWithColor::create(rect, color)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillRect(const FloatRect& rect, Gradient& gradient)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillRectWithGradient::create(rect, gradient)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillRectWithGradient::create(rect, gradient)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillRect(const FloatRect& rect, const Color& color, CompositeOperator op, BlendMode blendMode)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillCompositedRect::create(rect, color, op, blendMode)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillCompositedRect::create(rect, color, op, blendMode)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillRoundedRect(const FloatRoundedRect& rect, const Color& color, BlendMode blendMode)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillRoundedRect::create(rect, color, blendMode)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillRoundedRect::create(rect, color, blendMode)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillRectWithRoundedHole(const FloatRect& rect, const FloatRoundedRect& roundedHoleRect, const Color& color)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillRectWithRoundedHole::create(rect, roundedHoleRect, color)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillRectWithRoundedHole::create(rect, roundedHoleRect, color)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillPath(const Path& path)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillPath::create(path)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillPath::create(path)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::fillEllipse(const FloatRect& rect)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(FillEllipse::create(rect)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(FillEllipse::create(rect)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::strokeRect(const FloatRect& rect, float lineWidth)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(StrokeRect::create(rect, lineWidth)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(StrokeRect::create(rect, lineWidth)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::strokePath(const Path& path)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(StrokePath::create(path)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(StrokePath::create(path)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::strokeEllipse(const FloatRect& rect)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(StrokeEllipse::create(rect)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(StrokeEllipse::create(rect)));
>     updateItemExtent(newItem);
> }
> 
> void Recorder::clearRect(const FloatRect& rect)
> {
>-    DrawingItem& newItem = downcast<DrawingItem>(appendItem(ClearRect::create(rect)));
>+    auto& newItem = downcast<GeometryItem>(appendItem(ClearRect::create(rect)));
>     updateItemExtent(newItem);
> }
> 
>@@ -378,9 +411,9 @@ IntRect Recorder::clipBounds()
>     return IntRect(-2048, -2048, 4096, 4096);
> }
> 
>-void Recorder::clipToImageBuffer(ImageBuffer&, const FloatRect&)
>+void Recorder::clipToImageBuffer(const NativeImagePtr& image, const FloatRect& destRect, const FloatSize& bufferDestinationSize)
> {
>-    WTFLogAlways("GraphicsContext::clipToImageBuffer is not compatible with DisplayList::Recorder.");
>+    appendItem(ClipToImageBuffer::create(image, destRect, bufferDestinationSize));
> }
> 
> void Recorder::applyDeviceScaleFactor(float deviceScaleFactor)
>@@ -402,7 +435,7 @@ Item& Recorder::appendItem(Ref<Item>&& item)
>     return m_displayList.append(WTFMove(item));
> }
> 
>-void Recorder::updateItemExtent(DrawingItem& item) const
>+void Recorder::updateItemExtent(GeometryItem& item) const
> {
>     if (std::optional<FloatRect> rect = item.localBounds(graphicsContext()))
>         item.setExtent(extentFromLocalBounds(rect.value()));
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h b/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h
>index c5ac7091395fa4fe83a31d2c88db1e88a7ada3e4..fe5b5598121313887a59cfa15184e34c0d30c25c 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h
>@@ -45,8 +45,6 @@ struct ImagePaintingOptions;
> 
> namespace DisplayList {
> 
>-class DrawingItem;
>-
> class Recorder : public GraphicsContextImpl {
>     WTF_MAKE_NONCOPYABLE(Recorder);
> public:
>@@ -92,18 +90,26 @@ private:
>     ImageDrawResult drawTiledImage(Image&, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions&) override;
> #if USE(CG) || USE(CAIRO)
>     void drawNativeImage(const NativeImagePtr&, const FloatSize& selfSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator, BlendMode, ImageOrientation) override;
>+    void drawNativeScaledImage(const NativeImagePtr&, float scaleFactor, const IntPoint& destination, const IntRect& source) override;
> #endif
>     void drawPattern(Image&, const FloatRect& destRect, const FloatRect& srcRect, const AffineTransform&, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator, BlendMode = BlendModeNormal) override;
> 
>     void drawRect(const FloatRect&, float borderThickness) override;
>     void drawLine(const FloatPoint&, const FloatPoint&) override;
>-    void drawLinesForText(const FloatPoint&, const DashArray& widths, bool printing, bool doubleLines, float strokeThickness) override;
>+    void drawLinesForText(const FloatPoint&, const DashArray& widths, bool printing, bool doubleLines, StrokeStyle) override;
>     void drawLineForDocumentMarker(const FloatPoint&, float width, DocumentMarkerLineStyle) override;
>     void drawEllipse(const FloatRect&) override;
>+#if USE(CG)
>     void drawPath(const Path&) override;
>+#endif
> 
>     void drawFocusRing(const Path&, float width, float offset, const Color&) override;
>     void drawFocusRing(const Vector<FloatRect>&, float width, float offset, const Color&) override;
>+    
>+    void drawIcon(Icon&, const FloatRect&) override;
>+    void drawWidget(Widget&, const IntRect&) override;
>+    void drawScrollbar(Scrollbar&, const IntRect&) override;
>+    void drawTheme(Theme&, ControlPart, ControlStates&, const FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance) override;
> 
>     void save() override;
>     void restore() override;
>@@ -123,7 +129,7 @@ private:
>     void clipOut(const Path&) override;
>     void clipPath(const Path&, WindRule) override;
>     IntRect clipBounds() override;
>-    void clipToImageBuffer(ImageBuffer&, const FloatRect&) override;
>+    void clipToImageBuffer(const NativeImagePtr&, const FloatRect& destRect, const FloatSize& bufferDestinationSize) override;
>     
>     void applyDeviceScaleFactor(float) override;
> 
>@@ -133,7 +139,7 @@ private:
>     void willAppendItem(const Item&);
> 
>     FloatRect extentFromLocalBounds(const FloatRect&) const;
>-    void updateItemExtent(DrawingItem&) const;
>+    void updateItemExtent(GeometryItem&) const;
>     
>     const AffineTransform& ctm() const;
>     const FloatRect& clipBounds() const;
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.cpp b/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.cpp
>index 8feaa2f5d75328e436bf9d88b8dc05bac1c2e1f3..f31c85b28ee9c53ce61ef8f3a8d33cdc2712e62f 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.cpp
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.cpp
>@@ -40,8 +40,6 @@ Replayer::Replayer(GraphicsContext& context, const DisplayList& displayList)
> {
> }
> 
>-Replayer::~Replayer() = default;
>-
> std::unique_ptr<DisplayList> Replayer::replay(const FloatRect& initialClip, bool trackReplayList)
> {
>     LOG_WITH_STREAM(DisplayLists, stream << "\nReplaying with clip " << initialClip);
>@@ -51,13 +49,15 @@ std::unique_ptr<DisplayList> Replayer::replay(const FloatRect& initialClip, bool
>     if (UNLIKELY(trackReplayList))
>         replayList = std::make_unique<DisplayList>();
> 
>+    GraphicsContextStateSaver stateSaver(m_context);
>+    
>     size_t numItems = m_displayList.itemCount();
>     for (size_t i = 0; i < numItems; ++i) {
>         auto& item = m_displayList.list()[i].get();
> 
>-        if (!initialClip.isZero() && is<DrawingItem>(item)) {
>-            const DrawingItem& drawingItem = downcast<DrawingItem>(item);
>-            if (drawingItem.extentKnown() && !drawingItem.extent().intersects(initialClip)) {
>+        if (!initialClip.isZero() && is<GeometryItem>(item)) {
>+            const auto& geometryItem = downcast<GeometryItem>(item);
>+            if (geometryItem.extentKnown() && !geometryItem.extent().intersects(initialClip)) {
>                 LOG_WITH_STREAM(DisplayLists, stream << "skipping " << i << " " << item);
>                 continue;
>             }
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.h b/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.h
>index 4f968e846c6576ab5559af1240124116be631a6e..c0319892d5a202816af85f555a7de5c91762de1f 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.h
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayListReplayer.h
>@@ -40,8 +40,6 @@ class Replayer {
>     WTF_MAKE_NONCOPYABLE(Replayer);
> public:
>     Replayer(GraphicsContext&, const DisplayList&);
>-    ~Replayer();
>-
>     std::unique_ptr<DisplayList> replay(const FloatRect& initialClip = { }, bool trackReplayList = false);
>     
> private:
>diff --git a/Source/WebCore/platform/graphics/gtk/IconGtk.cpp b/Source/WebCore/platform/graphics/gtk/IconGtk.cpp
>index af185a54cdd49d2046865e693c5a73c94c58b04b..f0ae5cfca19abbfcb9400d8135b34c8f317c303d 100644
>--- a/Source/WebCore/platform/graphics/gtk/IconGtk.cpp
>+++ b/Source/WebCore/platform/graphics/gtk/IconGtk.cpp
>@@ -113,11 +113,8 @@ RefPtr<Icon> Icon::createIconForFiles(const Vector<String>& filenames)
>     return 0;
> }
> 
>-void Icon::paint(GraphicsContext& context, const FloatRect& rect)
>+void Icon::platformPaint(GraphicsContext& context, const FloatRect& rect) const
> {
>-    if (context.paintingDisabled())
>-        return;
>-
>     // TODO: Scale/clip the image if necessary.
>     cairo_t* cr = context.platformContext()->cr();
>     cairo_save(cr);
>diff --git a/Source/WebCore/platform/graphics/ios/IconIOS.mm b/Source/WebCore/platform/graphics/ios/IconIOS.mm
>index cee516e1440e78eb543739ab2a038d87362f7d44..dbd83d57c0e6587af222d7c7a75dbf44ada08993 100644
>--- a/Source/WebCore/platform/graphics/ios/IconIOS.mm
>+++ b/Source/WebCore/platform/graphics/ios/IconIOS.mm
>@@ -55,11 +55,8 @@ RefPtr<Icon> Icon::createIconForImage(const RetainPtr<CGImageRef>& image)
>     return adoptRef(new Icon(image));
> }
> 
>-void Icon::paint(GraphicsContext& context, const FloatRect& destRect)
>+void Icon::platformPaint(GraphicsContext& context, const FloatRect& destRect) const
> {
>-    if (context.paintingDisabled())
>-        return;
>-
>     GraphicsContextStateSaver stateSaver(context);
> 
>     float width = CGImageGetWidth(m_cgImage.get());
>diff --git a/Source/WebCore/platform/graphics/mac/IconMac.mm b/Source/WebCore/platform/graphics/mac/IconMac.mm
>index 6143b51d43645d5ad48c395af7c4ea26433d7c4a..e850308d0bc85727b950c66c166af7d54ad942f1 100644
>--- a/Source/WebCore/platform/graphics/mac/IconMac.mm
>+++ b/Source/WebCore/platform/graphics/mac/IconMac.mm
>@@ -91,13 +91,9 @@ RefPtr<Icon> Icon::createIconForUTI(const String& UTI)
>     return adoptRef(new Icon(image));
> }
> 
>-void Icon::paint(GraphicsContext& context, const FloatRect& rect)
>+void Icon::platformPaint(GraphicsContext& context, const FloatRect& rect) const
> {
>-    if (context.paintingDisabled())
>-        return;
>-
>     LocalCurrentGraphicsContext localCurrentGC(context);
>-
>     [m_nsImage drawInRect:rect fromRect:NSMakeRect(0, 0, [m_nsImage size].width, [m_nsImage size].height) operation:NSCompositingOperationSourceOver fraction:1.0f];
> }
> 
>diff --git a/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp b/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp
>index 9a954e22b94bbae9cb175feafc042fffeb5afe1d..a3e017a5e6bbce027f71961d666be1d0f5ff3fa6 100644
>--- a/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp
>+++ b/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.cpp
>@@ -570,6 +570,11 @@ void CairoOperationRecorder::drawNativeImage(const NativeImagePtr& image, const
>     append(createCommand<DrawNativeImage>(RefPtr<cairo_surface_t>(image.get()), destRect, srcRect, compositeOperator, blendMode, orientation, state.imageInterpolationQuality, state.alpha, Cairo::ShadowState(state)));
> }
> 
>+void CairoOperationRecorder::drawNativeScaledImage(const NativeImagePtr&, float, const IntPoint&, const IntRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+    
> void CairoOperationRecorder::drawPattern(Image& image, const FloatRect& destRect, const FloatRect& tileRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, CompositeOperator compositeOperator, BlendMode blendMode)
> {
>     struct DrawPattern final : PaintingOperation, OperationData<RefPtr<cairo_surface_t>, IntSize, FloatRect, FloatRect, AffineTransform, FloatPoint, CompositeOperator, BlendMode> {
>@@ -631,7 +636,7 @@ void CairoOperationRecorder::drawLine(const FloatPoint& point1, const FloatPoint
>     append(createCommand<DrawLine>(point1, point2, state.strokeStyle, state.strokeColor, state.strokeThickness, state.shouldAntialias));
> }
> 
>-void CairoOperationRecorder::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleUnderlines, float strokeThickness)
>+void CairoOperationRecorder::drawLinesForText(const FloatPoint& point, const DashArray& widths, bool printing, bool doubleUnderlines, StrokeStyle strokeStyle)
> {
>     struct DrawLinesForText final : PaintingOperation, OperationData<FloatPoint, DashArray, bool, bool, Color, float> {
>         virtual ~DrawLinesForText() = default;
>@@ -647,7 +652,7 @@ void CairoOperationRecorder::drawLinesForText(const FloatPoint& point, const Das
>         }
>     };
> 
>-    UNUSED_PARAM(strokeThickness);
>+    UNUSED_PARAM(strokeStyle);
>     auto& state = graphicsContext().state();
>     append(createCommand<DrawLinesForText>(point, widths, printing, doubleUnderlines, state.strokeColor, state.strokeThickness));
> }
>@@ -691,10 +696,6 @@ void CairoOperationRecorder::drawEllipse(const FloatRect& rect)
>     append(createCommand<DrawEllipse>(rect, state.fillColor, state.strokeStyle, state.strokeColor, state.strokeThickness));
> }
> 
>-void CairoOperationRecorder::drawPath(const Path&)
>-{
>-}
>-
> void CairoOperationRecorder::drawFocusRing(const Path& path, float width, float offset, const Color& color)
> {
>     struct DrawFocusRing final : PaintingOperation, OperationData<Path, float, Color> {
>@@ -735,6 +736,26 @@ void CairoOperationRecorder::drawFocusRing(const Vector<FloatRect>& rects, float
>     append(createCommand<DrawFocusRing>(rects, width, color));
> }
> 
>+void CairoOperationRecorder::drawIcon(Icon&, const FloatRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+    
>+void CairoOperationRecorder::drawWidget(Widget&, const IntRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+    
>+void CairoOperationRecorder::drawScrollbar(Scrollbar&, const IntRect&)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+    
>+void CairoOperationRecorder::drawTheme(Theme&, ControlPart, ControlStates&, const FloatRect&, float, void*, float, float, bool, bool)
>+{
>+    ASSERT_NOT_IMPLEMENTED_YET();
>+}
>+
> void CairoOperationRecorder::save()
> {
>     struct Save final : PaintingOperation, OperationData<> {
>@@ -1053,7 +1074,7 @@ IntRect CairoOperationRecorder::clipBounds()
>     return enclosingIntRect(state.ctmInverse.mapRect(state.clipBounds));
> }
> 
>-void CairoOperationRecorder::clipToImageBuffer(ImageBuffer& buffer, const FloatRect& destRect)
>+void CairoOperationRecorder::clipToImageBuffer(const NativeImagePtr& image, const FloatRect& destRect, const FloatSize&)
> {
>     struct ClipToImageBuffer final: PaintingOperation, OperationData<RefPtr<cairo_surface_t>, FloatRect> {
>         virtual ~ClipToImageBuffer() = default;
>@@ -1069,12 +1090,10 @@ void CairoOperationRecorder::clipToImageBuffer(ImageBuffer& buffer, const FloatR
>         }
>     };
> 
>-    RefPtr<Image> image = buffer.copyImage(DontCopyBackingStore);
>     if (!image)
>         return;
> 
>-    if (auto surface = image->nativeImageForCurrentFrame())
>-        append(createCommand<ClipToImageBuffer>(RefPtr<cairo_surface_t>(surface.get()), destRect));
>+    append(createCommand<ClipToImageBuffer>(image, destRect));
> }
> 
> void CairoOperationRecorder::applyDeviceScaleFactor(float)
>diff --git a/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h b/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h
>index dc4849e5cf4a8ca92f39a265cd99c143a98cd530..a8adc753cdc10077c81853a8817f13ab87273d15 100644
>--- a/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h
>+++ b/Source/WebCore/platform/graphics/nicosia/cairo/NicosiaCairoOperationRecorder.h
>@@ -68,17 +68,22 @@ private:
>     WebCore::ImageDrawResult drawTiledImage(WebCore::Image&, const WebCore::FloatRect&, const WebCore::FloatPoint&, const WebCore::FloatSize&, const WebCore::FloatSize&, const WebCore::ImagePaintingOptions&) override;
>     WebCore::ImageDrawResult drawTiledImage(WebCore::Image&, const WebCore::FloatRect&, const WebCore::FloatRect&, const WebCore::FloatSize&, WebCore::Image::TileRule, WebCore::Image::TileRule, const WebCore::ImagePaintingOptions&) override;
>     void drawNativeImage(const WebCore::NativeImagePtr&, const WebCore::FloatSize&, const WebCore::FloatRect&, const WebCore::FloatRect&, WebCore::CompositeOperator, WebCore::BlendMode, WebCore::ImageOrientation) override;
>+    void drawNativeScaledImage(const WebCore::NativeImagePtr&, float, const WebCore::IntPoint&, const WebCore::IntRect&) override;
>     void drawPattern(WebCore::Image&, const WebCore::FloatRect&, const WebCore::FloatRect&, const WebCore::AffineTransform&, const WebCore::FloatPoint&, const WebCore::FloatSize&, WebCore::CompositeOperator, WebCore::BlendMode = WebCore::BlendModeNormal) override;
> 
>     void drawRect(const WebCore::FloatRect&, float) override;
>     void drawLine(const WebCore::FloatPoint&, const WebCore::FloatPoint&) override;
>-    void drawLinesForText(const WebCore::FloatPoint&, const DashArray&, bool, bool, float) override;
>+    void drawLinesForText(const WebCore::FloatPoint&, const DashArray&, bool, bool, WebCore::StrokeStyle) override;
>     void drawLineForDocumentMarker(const WebCore::FloatPoint&, float, WebCore::DocumentMarkerLineStyle) override;
>     void drawEllipse(const WebCore::FloatRect&) override;
>-    void drawPath(const WebCore::Path&) override;
> 
>     void drawFocusRing(const WebCore::Path&, float, float, const WebCore::Color&) override;
>     void drawFocusRing(const Vector<WebCore::FloatRect>&, float, float, const WebCore::Color&) override;
>+    
>+    void drawIcon(WebCore::Icon&, const WebCore::FloatRect&) override;
>+    void drawWidget(WebCore::Widget&, const WebCore::IntRect&) override;
>+    void drawScrollbar(WebCore::Scrollbar&, const WebCore::IntRect&) override;
>+    void drawTheme(WebCore::Theme&, WebCore::ControlPart, WebCore::ControlStates&, const WebCore::FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance) override;
> 
>     void save() override;
>     void restore() override;
>@@ -98,7 +103,7 @@ private:
>     void clipOut(const WebCore::Path&) override;
>     void clipPath(const WebCore::Path&, WebCore::WindRule) override;
>     WebCore::IntRect clipBounds() override;
>-    void clipToImageBuffer(WebCore::ImageBuffer&, const WebCore::FloatRect&) override;
>+    void clipToImageBuffer(const WebCore::NativeImagePtr&, const WebCore::FloatRect&, const WebCore::FloatSize&) override;
> 
>     void applyDeviceScaleFactor(float) override;
> 
>diff --git a/Source/WebCore/platform/graphics/win/GraphicsContextDirect2D.cpp b/Source/WebCore/platform/graphics/win/GraphicsContextDirect2D.cpp
>index 029d079cc1c200398a7811e66f3e33e793961bac..1abf4fac13b0ada23adbdf004b11b38a82c22b5e 100644
>--- a/Source/WebCore/platform/graphics/win/GraphicsContextDirect2D.cpp
>+++ b/Source/WebCore/platform/graphics/win/GraphicsContextDirect2D.cpp
>@@ -1708,7 +1708,7 @@ void GraphicsContext::drawLinesForText(const FloatPoint& point, const DashArray&
>         return;
> 
>     if (isRecording()) {
>-        m_displayListRecorder->drawLinesForText(point, widths, printing, doubleLines, strokeThickness());
>+        m_displayListRecorder->drawLinesForText(point, widths, printing, doubleLines, strokeStyle);
>         return;
>     }
> 
>diff --git a/Source/WebCore/platform/graphics/win/IconWin.cpp b/Source/WebCore/platform/graphics/win/IconWin.cpp
>index 799e34740394063510e954b6af30998e7d25e2ad..18fe6f791275ead59c03423bad8c7d4a82d9cfbf 100644
>--- a/Source/WebCore/platform/graphics/win/IconWin.cpp
>+++ b/Source/WebCore/platform/graphics/win/IconWin.cpp
>@@ -74,11 +74,8 @@ RefPtr<Icon> Icon::createIconForFiles(const Vector<String>& filenames)
>     return adoptRef(new Icon(hIcon));
> }
> 
>-void Icon::paint(GraphicsContext& context, const FloatRect& r)
>+void Icon::platformPaint(GraphicsContext& context, const FloatRect& r) const
> {
>-    if (context.paintingDisabled())
>-        return;
>-
>     LocalWindowsContext windowContext(context, enclosingIntRect(r));
>     DrawIconEx(windowContext.hdc(), r.x(), r.y(), m_hIcon, r.width(), r.height(), 0, 0, DI_NORMAL);
> }
>diff --git a/Source/WebCore/platform/graphics/wpe/IconWPE.cpp b/Source/WebCore/platform/graphics/wpe/IconWPE.cpp
>index 76a21da36f36ef91aa17889b8fc119b222e725be..1edb7d9f5c6d139ae8f6751c1cca325d294e2767 100644
>--- a/Source/WebCore/platform/graphics/wpe/IconWPE.cpp
>+++ b/Source/WebCore/platform/graphics/wpe/IconWPE.cpp
>@@ -30,7 +30,7 @@ namespace WebCore {
> 
> Icon::~Icon() = default;
> 
>-void Icon::paint(GraphicsContext&, const FloatRect&)
>+void Icon::platformPaint(GraphicsContext&, const FloatRect&) const
> {
> }
> 
>diff --git a/Source/WebCore/platform/gtk/WidgetGtk.cpp b/Source/WebCore/platform/gtk/WidgetGtk.cpp
>index 874129339793ad2e6b3dad9f719fa0605b4520ad..f38a0a4e15cb19dd5c138b9c3a1c5a2e3ae9665d 100644
>--- a/Source/WebCore/platform/gtk/WidgetGtk.cpp
>+++ b/Source/WebCore/platform/gtk/WidgetGtk.cpp
>@@ -80,7 +80,12 @@ void Widget::hide()
>         gtk_widget_hide(platformWidget());
> }
> 
>-void Widget::paint(GraphicsContext&, const IntRect&, SecurityOriginPaintPolicy)
>+void Widget::paint(GraphicsContext& context, const IntRect& rect, SecurityOriginPaintPolicy)
>+{
>+    context.drawWidget(*this, rect);
>+}
>+
>+void Widget::platformPaint(GraphicsContext&, const IntRect&)
> {
> }
> 
>diff --git a/Source/WebCore/platform/ios/WidgetIOS.mm b/Source/WebCore/platform/ios/WidgetIOS.mm
>index 8b1e8b54b5ce270f248daeced524f772a154e9eb..dcc6a490520994aa4570212ce4bc2ddbb71ef61f 100644
>--- a/Source/WebCore/platform/ios/WidgetIOS.mm
>+++ b/Source/WebCore/platform/ios/WidgetIOS.mm
>@@ -141,14 +141,16 @@ NSView* Widget::getOuterView() const
>     return view;
> }
> 
>-void Widget::paint(GraphicsContext& p, const IntRect& r, SecurityOriginPaintPolicy)
>+void Widget::paint(GraphicsContext& context, const IntRect& rect, SecurityOriginPaintPolicy)
> {
>-    if (p.paintingDisabled())
>-        return;
>+    context.drawWidget(*this, rect);
>+}
>     
>+void Widget::platformPaint(GraphicsContext& context, const IntRect& rect)
>+{
>     NSView *view = getOuterView();
> 
>-    CGContextRef cgContext = p.platformContext();
>+    CGContextRef cgContext = context.platformContext();
>     CGContextSaveGState(cgContext);
> 
>     NSRect viewFrame = [view frame];
>@@ -156,7 +158,7 @@ void Widget::paint(GraphicsContext& p, const IntRect& r, SecurityOriginPaintPoli
>     CGContextTranslateCTM(cgContext, viewFrame.origin.x - viewBounds.origin.x, viewFrame.origin.y - viewBounds.origin.y);
> 
>     BEGIN_BLOCK_OBJC_EXCEPTIONS;
>-    [view displayRectIgnoringOpacity:[view convertRect:r fromView:[view superview]] inContext:cgContext];
>+    [view displayRectIgnoringOpacity:[view convertRect:rect fromView:[view superview]] inContext:cgContext];
>     END_BLOCK_OBJC_EXCEPTIONS;
> 
>     CGContextRestoreGState(cgContext);
>diff --git a/Source/WebCore/platform/mac/ThemeMac.h b/Source/WebCore/platform/mac/ThemeMac.h
>index 49028f1b43c73c35cc31370a7df4e98414fdc626..e9f303d3d1bfadf17b67d8d36e5e8b21574d6f1e 100644
>--- a/Source/WebCore/platform/mac/ThemeMac.h
>+++ b/Source/WebCore/platform/mac/ThemeMac.h
>@@ -53,7 +53,7 @@ private:
> 
>     bool controlRequiresPreWhiteSpace(ControlPart part) const final { return part == PushButtonPart; }
> 
>-    void paint(ControlPart, ControlStates&, GraphicsContext&, const FloatRect&, float zoomFactor, ScrollView*, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance) final;
>+    void platformPaint(GraphicsContext&, ControlPart, ControlStates&, const FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance) final;
>     void inflateControlPaintRect(ControlPart, const ControlStates&, FloatRect&, float zoomFactor) const final;
> 
>     bool userPrefersReducedMotion() const final;
>diff --git a/Source/WebCore/platform/mac/ThemeMac.mm b/Source/WebCore/platform/mac/ThemeMac.mm
>index 4831fff4f88ace14cfd0fef3ea7b81b784377d7a..d9238560196dd369e4878fb27e26269f342f5d3f 100644
>--- a/Source/WebCore/platform/mac/ThemeMac.mm
>+++ b/Source/WebCore/platform/mac/ThemeMac.mm
>@@ -387,7 +387,7 @@ static bool drawCellFocusRing(NSCell *cell, NSRect cellFrame, NSView *controlVie
>     return false;
> }
> 
>-static void paintToggleButton(ControlPart buttonType, ControlStates& controlStates, GraphicsContext& context, const FloatRect& zoomedRect, float zoomFactor, ScrollView* scrollView, float deviceScaleFactor, float pageScaleFactor)
>+static void paintToggleButton(GraphicsContext& context, ControlPart buttonType, ControlStates& controlStates, const FloatRect& zoomedRect, float zoomFactor, ScrollView* scrollView, float deviceScaleFactor, float pageScaleFactor)
> {
>     BEGIN_BLOCK_OBJC_EXCEPTIONS
> 
>@@ -520,7 +520,7 @@ static NSButtonCell *button(ControlPart part, const ControlStates& controlStates
>     return cell;
> }
>     
>-static void paintButton(ControlPart part, ControlStates& controlStates, GraphicsContext& context, const FloatRect& zoomedRect, float zoomFactor, ScrollView* scrollView, float deviceScaleFactor, float pageScaleFactor)
>+static void paintButton(GraphicsContext& context, ControlPart part, ControlStates& controlStates, const FloatRect& zoomedRect, float zoomFactor, ScrollView* scrollView, float deviceScaleFactor, float pageScaleFactor)
> {
>     BEGIN_BLOCK_OBJC_EXCEPTIONS
>     
>@@ -596,7 +596,7 @@ static NSControlSize stepperControlSizeForFont(const FontCascade& font)
>     return NSControlSizeMini;
> }
> 
>-static void paintStepper(ControlStates& states, GraphicsContext& context, const FloatRect& zoomedRect, float zoomFactor, ScrollView*)
>+static void paintStepper(GraphicsContext& context, ControlStates& states, const FloatRect& zoomedRect, float zoomFactor, ScrollView*)
> {
>     // We don't use NSStepperCell because there are no ways to draw an
>     // NSStepperCell with the up button highlighted.
>@@ -848,25 +848,25 @@ void ThemeMac::inflateControlPaintRect(ControlPart part, const ControlStates& st
>     END_BLOCK_OBJC_EXCEPTIONS
> }
> 
>-void ThemeMac::paint(ControlPart part, ControlStates& states, GraphicsContext& context, const FloatRect& zoomedRect, float zoomFactor, ScrollView* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance)
>+void ThemeMac::platformPaint(GraphicsContext& context, ControlPart part, ControlStates& states, const FloatRect& zoomedRect, float zoomFactor, void* scrollView, float deviceScaleFactor, float pageScaleFactor, bool useSystemAppearance, bool useDarkAppearance)
> {
>     LocalDefaultSystemAppearance localAppearance(useSystemAppearance, useDarkAppearance);
> 
>     switch (part) {
>         case CheckboxPart:
>-            paintToggleButton(part, states, context, zoomedRect, zoomFactor, scrollView, deviceScaleFactor, pageScaleFactor);
>+            paintToggleButton(context, part, states, zoomedRect, zoomFactor, reinterpret_cast<ScrollView*>(scrollView), deviceScaleFactor, pageScaleFactor);
>             break;
>         case RadioPart:
>-            paintToggleButton(part, states, context, zoomedRect, zoomFactor, scrollView, deviceScaleFactor, pageScaleFactor);
>+            paintToggleButton(context, part, states, zoomedRect, zoomFactor, reinterpret_cast<ScrollView*>(scrollView), deviceScaleFactor, pageScaleFactor);
>             break;
>         case PushButtonPart:
>         case DefaultButtonPart:
>         case ButtonPart:
>         case SquareButtonPart:
>-            paintButton(part, states, context, zoomedRect, zoomFactor, scrollView, deviceScaleFactor, pageScaleFactor);
>+            paintButton(context, part, states, zoomedRect, zoomFactor, reinterpret_cast<ScrollView*>(scrollView), deviceScaleFactor, pageScaleFactor);
>             break;
>         case InnerSpinButtonPart:
>-            paintStepper(states, context, zoomedRect, zoomFactor, scrollView);
>+            paintStepper(context, states, zoomedRect, zoomFactor, reinterpret_cast<ScrollView*>(scrollView));
>             break;
>         default:
>             break;
>diff --git a/Source/WebCore/platform/mac/WidgetMac.mm b/Source/WebCore/platform/mac/WidgetMac.mm
>index 996c19d550f9131fa02360b657f88be9f9e666bb..b8a7fc932066c8192ab2bc8ee3705978f9e085e5 100644
>--- a/Source/WebCore/platform/mac/WidgetMac.mm
>+++ b/Source/WebCore/platform/mac/WidgetMac.mm
>@@ -186,9 +186,9 @@ NSView *Widget::getOuterView() const
>     return view;
> }
> 
>-void Widget::paint(GraphicsContext& p, const IntRect& r, SecurityOriginPaintPolicy)
>+void Widget::paint(GraphicsContext& context, const IntRect& rect, SecurityOriginPaintPolicy)
> {
>-    if (p.paintingDisabled())
>+    if (context.paintingDisabled())
>         return;
>     NSView *view = getOuterView();
> 
>@@ -202,11 +202,17 @@ void Widget::paint(GraphicsContext& p, const IntRect& r, SecurityOriginPaintPoli
> #endif
>         return;
>     }
>-
>+    
>+    context.drawWidget(*this, rect);
>+}
>+    
>+void Widget::platformPaint(GraphicsContext& context, const IntRect& rect)
>+{
>     // Take a reference to this Widget, because sending messages to the views can invoke arbitrary
>     // code, which can deref it.
>     Ref<Widget> protectedThis(*this);
> 
>+    NSView *view = getOuterView();
>     NSGraphicsContext *currentContext = [NSGraphicsContext currentContext];
> #pragma clang diagnostic push
> #pragma clang diagnostic ignored "-Wdeprecated-declarations"
>@@ -214,7 +220,7 @@ void Widget::paint(GraphicsContext& p, const IntRect& r, SecurityOriginPaintPoli
> #pragma clang diagnostic pop
>         // This is the common case of drawing into a window or an inclusive layer, or printing.
>         BEGIN_BLOCK_OBJC_EXCEPTIONS;
>-        [view displayRectIgnoringOpacity:[view convertRect:r fromView:[view superview]]];
>+        [view displayRectIgnoringOpacity:[view convertRect:rect fromView:[view superview]]];
>         END_BLOCK_OBJC_EXCEPTIONS;
>         return;
>     }
>@@ -237,7 +243,7 @@ void Widget::paint(GraphicsContext& p, const IntRect& r, SecurityOriginPaintPoli
>             scrollView = 0;
>     }
> 
>-    CGContextRef cgContext = p.platformContext();
>+    CGContextRef cgContext = context.platformContext();
> #pragma clang diagnostic push
> #pragma clang diagnostic ignored "-Wdeprecated-declarations"
>     ASSERT(cgContext == [currentContext graphicsPort]);
>@@ -259,7 +265,7 @@ void Widget::paint(GraphicsContext& p, const IntRect& r, SecurityOriginPaintPoli
> #pragma clang diagnostic ignored "-Wdeprecated-declarations"
>         NSGraphicsContext *nsContext = [NSGraphicsContext graphicsContextWithGraphicsPort:cgContext flipped:NO];
> #pragma clang diagnostic pop
>-        [view displayRectIgnoringOpacity:[view convertRect:r fromView:[view superview]] inContext:nsContext];
>+        [view displayRectIgnoringOpacity:[view convertRect:rect fromView:[view superview]] inContext:nsContext];
>     }
>     END_BLOCK_OBJC_EXCEPTIONS;
> 
>diff --git a/Source/WebCore/platform/text/TextFlags.h b/Source/WebCore/platform/text/TextFlags.h
>index f8cb3bd26674651e6ace0682db0af8ebd5f89f35..ecfe17bb21935fdf5ddfcf6ab268d17f6af2e9a0 100644
>--- a/Source/WebCore/platform/text/TextFlags.h
>+++ b/Source/WebCore/platform/text/TextFlags.h
>@@ -25,6 +25,8 @@
> 
> #pragma once
> 
>+#include <wtf/text/TextStream.h>
>+
> namespace WebCore {
> 
> enum class TextRenderingMode : uint8_t {
>@@ -40,6 +42,12 @@ enum class FontSmoothingMode : uint8_t {
>     Antialiased,
>     SubpixelAntialiased
> };
>+    
>+inline WTF::TextStream& operator<<(WTF::TextStream& ts, const FontSmoothingMode&)
>+{
>+    // FIXME: dump the FontSmoothingMode to the TextStream.
>+    return ts;
>+}
> 
> // This setting is used to provide ways of switching between multiple rendering modes that may have different
> // metrics. It is used to switch between CG and GDI text on Windows.
>diff --git a/Source/WebCore/platform/win/WidgetWin.cpp b/Source/WebCore/platform/win/WidgetWin.cpp
>index 8bdc023a43766d45f3c1a9fca8ce093ef935d7b9..a51e4f175942d8bbe84e7a37e19bad682691e3c8 100644
>--- a/Source/WebCore/platform/win/WidgetWin.cpp
>+++ b/Source/WebCore/platform/win/WidgetWin.cpp
>@@ -75,7 +75,12 @@ void Widget::setCursor(const Cursor& cursor)
>     view->hostWindow()->setCursor(cursor);
> }
> 
>-void Widget::paint(GraphicsContext&, const IntRect&, SecurityOriginPaintPolicy)
>+void Widget::paint(GraphicsContext& context, const IntRect& rect, SecurityOriginPaintPolicy)
>+{
>+    context.drawWidget(*this, rect);
>+}
>+
>+void Widget::platformPaint(GraphicsContext&, const IntRect&)
> {
> }
> 
>diff --git a/Source/WebCore/platform/wpe/ThemeWPE.cpp b/Source/WebCore/platform/wpe/ThemeWPE.cpp
>index e22a2947ee727aaf80db706ab767a7e6a1845f92..340a0ada0b34ae5ec7cfda006cf8485dce97e1ee 100644
>--- a/Source/WebCore/platform/wpe/ThemeWPE.cpp
>+++ b/Source/WebCore/platform/wpe/ThemeWPE.cpp
>@@ -57,24 +57,24 @@ LengthSize ThemeWPE::controlSize(ControlPart part, const FontCascade& fontCascad
>     return Theme::controlSize(part, fontCascade, zoomedSize, zoomFactor);
> }
> 
>-void ThemeWPE::paint(ControlPart part, ControlStates& states, GraphicsContext& context, const FloatRect& zoomedRect, float zoomFactor, ScrollView*, float, float, bool, bool)
>+void ThemeWPE::platformPaint(GraphicsContext& context, ControlPart part, ControlStates& states, const FloatRect& zoomedRect, float zoomFactor, void* , float, float, bool, bool)
> {
>     switch (part) {
>     case CheckboxPart:
>-        paintCheckbox(states, context, zoomedRect, zoomFactor);
>+        paintCheckbox(context, states, zoomedRect, zoomFactor);
>         break;
>     case RadioPart:
>-        paintRadio(states, context, zoomedRect, zoomFactor);
>+        paintRadio(context, states, zoomedRect, zoomFactor);
>         break;
>     case PushButtonPart:
>-        paintButton(states, context, zoomedRect, zoomFactor);
>+        paintButton(context, states, zoomedRect, zoomFactor);
>         break;
>     default:
>         break;
>     }
> }
> 
>-void ThemeWPE::paintCheckbox(ControlStates& states, GraphicsContext& context, const FloatRect& zoomedRect, float)
>+void ThemeWPE::paintCheckbox(GraphicsContext& context, ControlStates& states, const FloatRect& zoomedRect, float)
> {
>     GraphicsContextStateSaver stateSaver(context);
> 
>@@ -103,7 +103,7 @@ void ThemeWPE::paintCheckbox(ControlStates& states, GraphicsContext& context, co
>     }
> }
> 
>-void ThemeWPE::paintRadio(ControlStates& states, GraphicsContext& context, const FloatRect& zoomedRect, float)
>+void ThemeWPE::paintRadio(GraphicsContext& context, ControlStates& states, const FloatRect& zoomedRect, float)
> {
>     GraphicsContextStateSaver stateSaver(context);
> 
>@@ -129,7 +129,7 @@ void ThemeWPE::paintRadio(ControlStates& states, GraphicsContext& context, const
>     }
> }
> 
>-void ThemeWPE::paintButton(ControlStates& states, GraphicsContext& context, const FloatRect& zoomedRect, float)
>+void ThemeWPE::paintButton(GraphicsContext& context, ControlStates& states, const FloatRect& zoomedRect, float)
> {
>     GraphicsContextStateSaver stateSaver(context);
> 
>diff --git a/Source/WebCore/platform/wpe/ThemeWPE.h b/Source/WebCore/platform/wpe/ThemeWPE.h
>index b176a802f2a98f4fa0c01baa67f598dc08ddc723..414ae0b210c9c6c27fcfb2d286bc56ca206d23b6 100644
>--- a/Source/WebCore/platform/wpe/ThemeWPE.h
>+++ b/Source/WebCore/platform/wpe/ThemeWPE.h
>@@ -33,11 +33,11 @@ class ThemeWPE final : public Theme {
> private:
>     LengthSize controlSize(ControlPart, const FontCascade&, const LengthSize&, float) const final;
> 
>-    void paint(ControlPart, ControlStates&, GraphicsContext&, const FloatRect&, float, ScrollView*, float, float, bool, bool) final;
>+    void platformPaint(GraphicsContext&, ControlPart, ControlStates&, const FloatRect&, float, void*, float, float, bool, bool) final;
> 
>-    void paintCheckbox(ControlStates&, GraphicsContext&, const FloatRect&, float);
>-    void paintRadio(ControlStates&, GraphicsContext&, const FloatRect&, float);
>-    void paintButton(ControlStates&, GraphicsContext&, const FloatRect&, float);
>+    void paintCheckbox(GraphicsContext&, ControlStates&, const FloatRect&, float);
>+    void paintRadio(GraphicsContext&, ControlStates&, const FloatRect&, float);
>+    void paintButton(GraphicsContext&, ControlStates&, const FloatRect&, float);
> };
> 
> } // namespace WebCore
>diff --git a/Source/WebCore/platform/wpe/WidgetWPE.cpp b/Source/WebCore/platform/wpe/WidgetWPE.cpp
>index 5f66330c523987a670850004b3989ccac640fb5d..9453385d87aeacd11c07a19942789c3b352b79af 100644
>--- a/Source/WebCore/platform/wpe/WidgetWPE.cpp
>+++ b/Source/WebCore/platform/wpe/WidgetWPE.cpp
>@@ -52,7 +52,12 @@ IntRect Widget::frameRect() const
>     return m_frame;
> }
> 
>-void Widget::paint(GraphicsContext&, const IntRect&, SecurityOriginPaintPolicy)
>+void Widget::paint(GraphicsContext& context, const IntRect& rect, SecurityOriginPaintPolicy)
>+{
>+    context.drawWidget(*this, rect);
>+}
>+
>+void Widget::platformPaint(GraphicsContext&, const IntRect&)
> {
>     notImplemented();
> }
>diff --git a/Source/WebCore/rendering/PaintPhase.h b/Source/WebCore/rendering/PaintPhase.h
>index 37dc98c875206ddcb0320b6710c845ae8123a623..cfe35af7ff5c69854fe2fc29a6978362d3e0fa2e 100644
>--- a/Source/WebCore/rendering/PaintPhase.h
>+++ b/Source/WebCore/rendering/PaintPhase.h
>@@ -49,7 +49,8 @@ enum PaintPhase {
>     PaintPhaseCollapsedTableBorders,
>     PaintPhaseTextClip,
>     PaintPhaseMask,
>-    PaintPhaseClippingMask
>+    PaintPhaseClippingMask,
>+    PaintPhaseMax
> };
> 
> enum PaintBehaviorFlags {
>diff --git a/Source/WebCore/rendering/RenderBoxModelObject.cpp b/Source/WebCore/rendering/RenderBoxModelObject.cpp
>index 70c228f5b67b5d3a7d0c4c457667ef19629c1fb5..ebf2d7441f957474008bd81acf5c35b29244943d 100644
>--- a/Source/WebCore/rendering/RenderBoxModelObject.cpp
>+++ b/Source/WebCore/rendering/RenderBoxModelObject.cpp
>@@ -981,11 +981,7 @@ void RenderBoxModelObject::paintFillLayerExtended(const PaintInfo& paintInfo, co
> 
>             auto interpolation = chooseInterpolationQuality(context, *image, &bgLayer, geometry.tileSize());
>             auto decodingMode = decodingModeForImageDraw(*image, paintInfo);
>-            auto drawResult = context.drawTiledImage(*image, geometry.destRect(), toLayoutPoint(geometry.relativePhase()), geometry.tileSize(), geometry.spaceSize(), ImagePaintingOptions(compositeOp, bgLayer.blendMode(), decodingMode, ImageOrientationDescription(), interpolation));
>-            if (drawResult == ImageDrawResult::DidRequestDecoding) {
>-                ASSERT(bgImage->isCachedImage());
>-                bgImage->cachedImage()->addClientWaitingForAsyncDecoding(*this);
>-            }
>+            context.drawTiledImage(*image, geometry.destRect(), toLayoutPoint(geometry.relativePhase()), geometry.tileSize(), geometry.spaceSize(), ImagePaintingOptions(compositeOp, bgLayer.blendMode(), decodingMode, this, ImageOrientationDescription(), interpolation));
>         }
>     }
> 
>diff --git a/Source/WebCore/rendering/RenderImage.cpp b/Source/WebCore/rendering/RenderImage.cpp
>index 973fa0120384030339124699ed2a8dcb4a9020d9..fdb98edf9020617e706dd84b494d615c908f8db8 100644
>--- a/Source/WebCore/rendering/RenderImage.cpp
>+++ b/Source/WebCore/rendering/RenderImage.cpp
>@@ -617,9 +617,7 @@ ImageDrawResult RenderImage::paintIntoRect(PaintInfo& paintInfo, const FloatRect
> 
>     ImageOrientationDescription orientationDescription(shouldRespectImageOrientation(), style().imageOrientation());
>     auto decodingMode = decodingModeForImageDraw(*image, paintInfo);
>-    auto drawResult = paintInfo.context().drawImage(*img, rect, ImagePaintingOptions(compositeOperator, BlendModeNormal, decodingMode, orientationDescription, interpolation));
>-    if (drawResult == ImageDrawResult::DidRequestDecoding)
>-        imageResource().cachedImage()->addClientWaitingForAsyncDecoding(*this);
>+    auto drawResult = paintInfo.context().drawImage(*img, rect, ImagePaintingOptions(compositeOperator, BlendModeNormal, decodingMode, this, orientationDescription, interpolation));
> 
> #if USE(SYSTEM_PREVIEW)
>     if (imageElement && imageElement->isSystemPreviewImage() && drawResult == ImageDrawResult::DidDraw && RuntimeEnabledFeatures::sharedFeatures().systemPreviewEnabled())
>diff --git a/Source/WebCore/rendering/RenderLayer.cpp b/Source/WebCore/rendering/RenderLayer.cpp
>index 8291ef99c0405779e3314e4df156beed865efda4..f22283049f24724314044d14848b594d2953373d 100644
>--- a/Source/WebCore/rendering/RenderLayer.cpp
>+++ b/Source/WebCore/rendering/RenderLayer.cpp
>@@ -95,6 +95,7 @@
> #include "RenderIterator.h"
> #include "RenderLayerBacking.h"
> #include "RenderLayerCompositor.h"
>+#include "RenderLayerContext.h"
> #include "RenderLayerFilterInfo.h"
> #include "RenderMarquee.h"
> #include "RenderMultiColumnFlow.h"
>@@ -280,7 +281,6 @@ RenderLayer::RenderLayer(RenderLayerModelObject& rendererLayerModelObject)
>     , m_hasOutOfFlowPositionedDescendantDirty(true)
>     , m_needsCompositedScrolling(false)
>     , m_descendantsAreContiguousInStackingOrder(false)
>-    , m_usedTransparency(false)
>     , m_paintingInsideReflection(false)
>     , m_inOverflowRelayout(false)
>     , m_repaintStatus(NeedsNormalRepaint)
>@@ -1799,7 +1799,7 @@ static LayoutRect paintingExtent(const RenderLayer& currentLayer, const RenderLa
> 
> void RenderLayer::beginTransparencyLayers(GraphicsContext& context, const LayerPaintingInfo& paintingInfo, const LayoutRect& dirtyRect)
> {
>-    if (context.paintingDisabled() || (paintsWithTransparency(paintingInfo.paintBehavior) && m_usedTransparency))
>+    if (context.paintingDisabled() || (paintsWithTransparency(paintingInfo.paintBehavior) && m_contextForTransparencyLayer))
>         return;
> 
>     RenderLayer* ancestor = transparentPaintingAncestor();
>@@ -1808,7 +1808,7 @@ void RenderLayer::beginTransparencyLayers(GraphicsContext& context, const LayerP
>     
>     if (paintsWithTransparency(paintingInfo.paintBehavior)) {
>         ASSERT(isStackingContext());
>-        m_usedTransparency = true;
>+        m_contextForTransparencyLayer = &context;
>         context.save();
>         LayoutRect adjustedClipRect = paintingExtent(*this, paintingInfo.rootLayer, dirtyRect, paintingInfo.paintBehavior);
>         adjustedClipRect.move(paintingInfo.subpixelOffset);
>@@ -1835,6 +1835,16 @@ void RenderLayer::beginTransparencyLayers(GraphicsContext& context, const LayerP
>     }
> }
> 
>+void RenderLayer::endTransparencyLayers()
>+{
>+    if (!m_contextForTransparencyLayer)
>+        return;
>+
>+    m_contextForTransparencyLayer->endTransparencyLayer();
>+    m_contextForTransparencyLayer->restore();
>+    m_contextForTransparencyLayer = nullptr;
>+}
>+
> #if PLATFORM(IOS)
> void RenderLayer::willBeDestroyed()
> {
>@@ -4382,40 +4392,18 @@ void RenderLayer::paintLayerContents(GraphicsContext& context, const LayerPainti
>                 (isPaintingOverflowContents) ? IgnoreOverflowClip : RespectOverflowClip, offsetFromRoot);
>             updatePaintingInfoForFragments(layerFragments, localPaintingInfo, localPaintFlags, shouldPaintContent, offsetFromRoot);
>         }
>-        
>-        if (isPaintingCompositedBackground) {
>-            // Paint only the backgrounds for all of the fragments of the layer.
>-            if (shouldPaintContent && !selectionOnly) {
>-                paintBackgroundForFragments(layerFragments, currentContext, context, paintingInfo.paintDirtyRect, haveTransparency,
>-                    localPaintingInfo, paintBehavior, subtreePaintRootForRenderer);
>-            }
>-        }
> 
>-        // Now walk the sorted list of children with negative z-indices.
>-        if ((isPaintingScrollingContent && isPaintingOverflowContents) || (!isPaintingScrollingContent && isPaintingCompositedBackground))
>-            paintList(negZOrderList(), currentContext, localPaintingInfo, localPaintFlags);
>-        
>-        if (isPaintingCompositedForeground) {
>-            if (shouldPaintContent) {
>-                paintForegroundForFragments(layerFragments, currentContext, context, paintingInfo.paintDirtyRect, haveTransparency,
>-                    localPaintingInfo, paintBehavior, subtreePaintRootForRenderer);
>-            }
>-        }
>-
>-        if (shouldPaintOutline)
>-            paintOutlineForFragments(layerFragments, currentContext, localPaintingInfo, paintBehavior, subtreePaintRootForRenderer);
>-
>-        if (isPaintingCompositedForeground) {
>-            // Paint any child layers that have overflow.
>-            paintList(m_normalFlowList.get(), currentContext, localPaintingInfo, localPaintFlags);
>-        
>-            // Now walk the sorted list of children with positive z-indices.
>-            paintList(posZOrderList(), currentContext, localPaintingInfo, localPaintFlags);
>+        if (true) {
>+            RenderLayerContext renderLayerContext(currentContext, paintingInfo.paintDirtyRect);
>+            paintCompositedPhasesMultiplePasses(layerFragments, renderLayerContext, context, paintingInfo.paintDirtyRect, localPaintingInfo, localPaintFlags,
>+                paintBehavior, subtreePaintRootForRenderer);
>+        } else {
>+            RenderLayerDisplayListContext renderLayerContext(currentContext, context, paintingInfo.paintDirtyRect);
>+            paintCompositedPhasesMultiplePasses(layerFragments, renderLayerContext, context, paintingInfo.paintDirtyRect, localPaintingInfo, localPaintFlags,
>+                paintBehavior, subtreePaintRootForRenderer);
>+            renderLayerContext.replay();
>         }
> 
>-        if (isPaintingOverlayScrollbars && hasScrollbars())
>-            paintOverflowControlsForFragments(layerFragments, currentContext, localPaintingInfo);
>-
>         if (filterContext) {
>             // When we called collectFragments() last time, paintDirtyRect was reset to represent the filter bounds.
>             // Now we need to compute the backgroundRect uncontaminated by filters, in order to clip the filtered result.
>@@ -4459,11 +4447,7 @@ void RenderLayer::paintLayerContents(GraphicsContext& context, const LayerPainti
>     }
> 
>     // End our transparency layer
>-    if (haveTransparency && m_usedTransparency && !m_paintingInsideReflection) {
>-        context.endTransparencyLayer();
>-        context.restore();
>-        m_usedTransparency = false;
>-    }
>+    endTransparencyLayers();
> 
>     // Re-set this to whatever it was before we painted the layer.
>     if (needToAdjustSubpixelQuantization)
>@@ -4835,6 +4819,53 @@ void RenderLayer::paintOutlineForFragments(const LayerFragments& layerFragments,
>     }
> }
> 
>+void RenderLayer::paintCompositedPhasesMultiplePasses(const LayerFragments& layerFragments, RenderLayerContext& renderLayerContext, GraphicsContext& context,
>+    const LayoutRect& paintDirtyRect, const LayerPaintingInfo& paintingInfo, PaintLayerFlags paintFlags, PaintBehavior paintBehavior, RenderObject* subtreePaintRootForRenderer)
>+{
>+    bool haveTransparency = paintFlags & PaintLayerHaveTransparency;
>+    bool isSelfPaintingLayer = this->isSelfPaintingLayer();
>+    bool isPaintingCompositedBackground = paintFlags & PaintLayerPaintingCompositingBackgroundPhase;
>+    bool isPaintingCompositedForeground = paintFlags & PaintLayerPaintingCompositingForegroundPhase;
>+    bool isPaintingScrollingContent = paintFlags & PaintLayerPaintingCompositingScrollingPhase;
>+    bool isPaintingOverlayScrollbars = paintFlags & PaintLayerPaintingOverlayScrollbars;
>+    bool isPaintingOverflowContents = paintFlags & PaintLayerPaintingOverflowContents;
>+
>+    bool shouldPaintOutline = isSelfPaintingLayer && !isPaintingOverlayScrollbars
>+        && ((isPaintingScrollingContent && isPaintingCompositedBackground)
>+        || (!isPaintingScrollingContent && isPaintingCompositedForeground));
>+    bool shouldPaintContent = m_hasVisibleContent && isSelfPaintingLayer && !isPaintingOverlayScrollbars;
>+    bool selectionOnly = paintingInfo.paintBehavior & PaintBehaviorSelectionOnly;
>+
>+    // Paint only the backgrounds for all of the fragments of the layer.
>+    if (isPaintingCompositedBackground && shouldPaintContent && !selectionOnly)
>+        paintBackgroundForFragments(layerFragments, renderLayerContext.graphicsContext(PaintPhaseBlockBackground), context, paintDirtyRect, haveTransparency, paintingInfo, paintBehavior, subtreePaintRootForRenderer);
>+
>+    // Now walk the sorted list of children with negative z-indices.
>+    if ((isPaintingScrollingContent && isPaintingOverflowContents) || (!isPaintingScrollingContent && isPaintingCompositedBackground))
>+        paintList(negZOrderList(), renderLayerContext.graphicsContext(FragmentPhaseNegZOrderList), paintingInfo, paintFlags);
>+
>+    if (isPaintingCompositedForeground && shouldPaintContent)
>+        paintForegroundForFragments(layerFragments, renderLayerContext.graphicsContext(PaintPhaseForeground), context, paintDirtyRect, haveTransparency, paintingInfo, paintBehavior, subtreePaintRootForRenderer);
>+
>+    if (shouldPaintOutline)
>+        paintOutlineForFragments(layerFragments, renderLayerContext.graphicsContext(PaintPhaseSelfOutline), paintingInfo, paintBehavior, subtreePaintRootForRenderer);
>+
>+    if (isPaintingCompositedForeground) {
>+        // Paint any child layers that have overflow.
>+        paintList(m_normalFlowList.get(), renderLayerContext.graphicsContext(FragmentPhaseNormalFlowList), paintingInfo, paintFlags);
>+
>+        // Now walk the sorted list of children with positive z-indices.
>+        paintList(posZOrderList(), renderLayerContext.graphicsContext(FragmentPhasePosZOrderList), paintingInfo, paintFlags);
>+    }
>+
>+    if (isPaintingOverlayScrollbars && hasScrollbars())
>+        paintOverflowControlsForFragments(layerFragments, renderLayerContext.graphicsContext(FragmentPhaseOverflowControls), paintingInfo);
>+
>+    // End our transparency layer if needed.
>+    if (m_contextForTransparencyLayer != &context)
>+        endTransparencyLayers();
>+}
>+
> void RenderLayer::paintMaskForFragments(const LayerFragments& layerFragments, GraphicsContext& context, const LayerPaintingInfo& localPaintingInfo,
>     PaintBehavior paintBehavior, RenderObject* subtreePaintRootForRenderer)
> {
>diff --git a/Source/WebCore/rendering/RenderLayer.h b/Source/WebCore/rendering/RenderLayer.h
>index d7fd0a8c6a6295f012f807e5416f15a76fc1d69d..9fa68405772152dcd4025256b06b699e5dbc4dc3 100644
>--- a/Source/WebCore/rendering/RenderLayer.h
>+++ b/Source/WebCore/rendering/RenderLayer.h
>@@ -72,6 +72,7 @@ class RenderFragmentedFlow;
> class RenderGeometryMap;
> class RenderLayerBacking;
> class RenderLayerCompositor;
>+class RenderLayerContext;
> class RenderMarquee;
> class RenderReplica;
> class RenderScrollbarPart;
>@@ -847,6 +848,8 @@ private:
>         const LayoutRect& transparencyPaintDirtyRect, bool haveTransparency, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer);
>     void paintForegroundForFragmentsWithPhase(PaintPhase, const LayerFragments&, GraphicsContext&, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer);
>     void paintOutlineForFragments(const LayerFragments&, GraphicsContext&, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer);
>+    void paintCompositedPhasesMultiplePasses(const LayerFragments&, RenderLayerContext&, GraphicsContext&, const LayoutRect&, const LayerPaintingInfo&,
>+        PaintLayerFlags, PaintBehavior, RenderObject*);
>     void paintOverflowControlsForFragments(const LayerFragments&, GraphicsContext&, const LayerPaintingInfo&);
>     void paintMaskForFragments(const LayerFragments&, GraphicsContext&, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer);
>     void paintChildClippingMaskForFragments(const LayerFragments&, GraphicsContext&, const LayerPaintingInfo&, PaintBehavior, RenderObject* paintingRootForRenderer);
>@@ -854,6 +857,7 @@ private:
> 
>     RenderLayer* transparentPaintingAncestor();
>     void beginTransparencyLayers(GraphicsContext&, const LayerPaintingInfo&, const LayoutRect& dirtyRect);
>+    void endTransparencyLayers();
> 
>     RenderLayer* hitTestLayer(RenderLayer* rootLayer, RenderLayer* containerLayer, const HitTestRequest& request, HitTestResult& result,
>         const LayoutRect& hitTestRect, const HitTestLocation&, bool appliedTransform,
>@@ -1057,9 +1061,6 @@ private:
>     // able to safely become a stacking context.
>     bool m_descendantsAreContiguousInStackingOrder : 1;
> 
>-    bool m_usedTransparency : 1; // Tracks whether we need to close a transparent layer, i.e., whether
>-                                 // we ended up painting this layer or any descendants (and therefore need to
>-                                 // blend).
>     bool m_paintingInsideReflection : 1;  // A state bit tracking if we are painting inside a replica.
>     bool m_inOverflowRelayout : 1;
>     unsigned m_repaintStatus : 2; // RepaintStatus
>@@ -1166,6 +1167,11 @@ private:
>     // Pointer to the enclosing RenderLayer that caused us to be paginated. It is 0 if we are not paginated.
>     WeakPtr<RenderLayer> m_enclosingPaginationLayer;
> 
>+    
>+    // Tracks whether we need to close a transparent layer, i.e., whether we ended up painting this layer or
>+    // any descendants (and therefore need to blend).
>+    GraphicsContext *m_contextForTransparencyLayer { nullptr };
>+    
>     IntRect m_blockSelectionGapsBounds;
> 
>     std::unique_ptr<RenderLayerBacking> m_backing;
>diff --git a/Source/WebCore/rendering/RenderLayerBacking.cpp b/Source/WebCore/rendering/RenderLayerBacking.cpp
>index 1c625511deaf73dcfc1b371bf705b807576eab1f..5856195376fe6088d42355b9d9e71950e7f9e638 100644
>--- a/Source/WebCore/rendering/RenderLayerBacking.cpp
>+++ b/Source/WebCore/rendering/RenderLayerBacking.cpp
>@@ -2575,7 +2575,7 @@ void RenderLayerBacking::paintIntoLayer(const GraphicsLayer* graphicsLayer, Grap
> 
>     compositor().didPaintBacking(this);
> 
>-    ASSERT(!m_owningLayer.m_usedTransparency);
>+    ASSERT(!m_owningLayer.m_contextForTransparencyLayer);
> }
> 
> // Up-call from compositing layer drawing callback.
>diff --git a/Source/WebCore/rendering/RenderLayerContext.h b/Source/WebCore/rendering/RenderLayerContext.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..96f3b2bd93bf142070a06306a4a8dd28c2c643e2
>--- /dev/null
>+++ b/Source/WebCore/rendering/RenderLayerContext.h
>@@ -0,0 +1,138 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc.  All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
>+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
>+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
>+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
>+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
>+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
>+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
>+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
>+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+#include "DisplayListRecorder.h"
>+#include "DisplayListReplayer.h"
>+
>+namespace WebCore {
>+
>+class GraphicsContext;
>+
>+enum FragmentPhase {
>+    FragmentPhaseMin = PaintPhaseMax,
>+    FragmentPhaseNegZOrderList = FragmentPhaseMin,
>+    FragmentPhaseNormalFlowList,
>+    FragmentPhasePosZOrderList,
>+    FragmentPhaseOverflowControls,
>+    FragmentPhaseMax
>+};
>+
>+class RenderLayerContext {
>+public:
>+    RenderLayerContext(GraphicsContext& drawingContext, const FloatRect& clipRect)
>+        : m_drawingContext(drawingContext)
>+        , m_clipRect(clipRect)
>+    {
>+    }
>+
>+    virtual ~RenderLayerContext() = default;
>+    virtual GraphicsContext& graphicsContext(PaintPhase) { return m_drawingContext; }
>+    virtual GraphicsContext& graphicsContext(FragmentPhase) { return m_drawingContext; }
>+
>+protected:
>+    GraphicsContext& m_drawingContext;
>+    FloatRect m_clipRect;
>+};
>+
>+class RenderLayerDisplayListContext : public RenderLayerContext {
>+public:
>+    RenderLayerDisplayListContext(GraphicsContext& drawingContext, GraphicsContext& referenceContext, const FloatRect& clipRect)
>+        : RenderLayerContext(drawingContext, clipRect)
>+        , m_referenceContext(referenceContext)
>+        , m_displayListContexts(paintOrdersSize())
>+        , m_displayLists(paintOrdersSize())
>+    {
>+    }
>+
>+    GraphicsContext& graphicsContext(PaintPhase phase) override
>+    {
>+        return graphicsContext(paintOrderIndex(phase));
>+    }
>+    
>+    GraphicsContext& graphicsContext(FragmentPhase phase) override
>+    {
>+        return graphicsContext(paintOrderIndex(phase));
>+    }
>+
>+    void replay()
>+    {
>+        for (auto&  displayList : m_displayLists) {
>+            if (!displayList || !displayList->itemCount())
>+                continue;
>+            DisplayList::Replayer replayer(m_drawingContext, *displayList);
>+            replayer.replay(m_clipRect);
>+        }
>+    }
>+
>+private:
>+    static const Vector<unsigned>& paintOrders()
>+    {
>+        static NeverDestroyed<Vector<unsigned>> paintOrders = Vector<unsigned>({
>+            PaintPhaseBlockBackground,
>+            FragmentPhaseNegZOrderList,
>+            PaintPhaseChildBlockBackground,
>+            PaintPhaseFloat,
>+            PaintPhaseForeground,
>+            PaintPhaseChildOutlines,
>+            PaintPhaseSelection,
>+            PaintPhaseSelfOutline,
>+            FragmentPhaseNormalFlowList,
>+            FragmentPhasePosZOrderList,
>+            FragmentPhaseOverflowControls,
>+        });
>+        return paintOrders;
>+    }
>+    
>+    static size_t paintOrdersSize()
>+    {
>+        return paintOrders().size();
>+    }
>+
>+    static size_t paintOrderIndex(unsigned paintOrder)
>+    {
>+        
>+        ASSERT(paintOrders().contains(paintOrder));
>+        return paintOrders().find(paintOrder);
>+    }
>+
>+    GraphicsContext& graphicsContext(size_t index)
>+    {
>+        if (!m_displayListContexts[index]) {
>+            m_displayListContexts[index] = std::make_unique<GraphicsContext>([&](GraphicsContext& context) {
>+                m_displayLists[index] = std::make_unique<DisplayList::DisplayList>();
>+                return std::make_unique<DisplayList::Recorder>(context, *m_displayLists[index], m_referenceContext.state(), m_clipRect, AffineTransform());
>+            });
>+        }
>+        return *m_displayListContexts[index];
>+    }
>+
>+    GraphicsContext& m_referenceContext;
>+    Vector<std::unique_ptr<GraphicsContext>> m_displayListContexts;
>+    Vector<std::unique_ptr<DisplayList::DisplayList>> m_displayLists;
>+};
>+
>+}
>diff --git a/Source/WebCore/rendering/RenderTheme.cpp b/Source/WebCore/rendering/RenderTheme.cpp
>index 89d6fbfb17f4a35685302001df3d41df95983240..ff21250933d2c20f70a47259a7d04c51ed9e304a 100644
>--- a/Source/WebCore/rendering/RenderTheme.cpp
>+++ b/Source/WebCore/rendering/RenderTheme.cpp
>@@ -304,7 +304,7 @@ bool RenderTheme::paint(const RenderBox& box, ControlStates& controlStates, cons
>     case ButtonPart:
>     case InnerSpinButtonPart:
>         updateControlStatesForRenderer(box, controlStates);
>-        Theme::singleton().paint(part, controlStates, paintInfo.context(), devicePixelSnappedRect, box.style().effectiveZoom(), &box.view().frameView(), deviceScaleFactor, pageScaleFactor, box.page().useSystemAppearance(), box.page().useDarkAppearance());
>+        Theme::singleton().paint(paintInfo.context(), part, controlStates, devicePixelSnappedRect, box.style().effectiveZoom(), &box.view().frameView(), deviceScaleFactor, pageScaleFactor, box.page().useSystemAppearance(), box.page().useDarkAppearance());
>         return false;
>     default:
>         break;
>diff --git a/Source/WebCore/rendering/svg/SVGRenderingContext.cpp b/Source/WebCore/rendering/svg/SVGRenderingContext.cpp
>index 2baa2f1bbe31ba631f21673317a12b1b414f793f..8a89b1031ed76ab3c46aa1592d7878d9f24a1e4f 100644
>--- a/Source/WebCore/rendering/svg/SVGRenderingContext.cpp
>+++ b/Source/WebCore/rendering/svg/SVGRenderingContext.cpp
>@@ -307,7 +307,7 @@ void SVGRenderingContext::clipToImageBuffer(GraphicsContext& context, const Affi
>     // The mask image has been created in the absolute coordinate space, as the image should not be scaled.
>     // So the actual masking process has to be done in the absolute coordinate space as well.
>     context.concatCTM(absoluteTransform.inverse().value_or(AffineTransform()));
>-    context.clipToImageBuffer(*imageBuffer, absoluteTargetRect);
>+    context.clipToImageBuffer(imageBuffer->copyNativeImage(DontCopyBackingStore), absoluteTargetRect, imageBuffer->sizeForDestinationSize(absoluteTargetRect.size()));
>     context.concatCTM(absoluteTransform);
> 
>     // When nesting resources, with objectBoundingBox as content unit types, there's no use in caching the
>diff --git a/Source/WebKit/Platform/cg/CGUtilities.cpp b/Source/WebKit/Platform/cg/CGUtilities.cpp
>deleted file mode 100644
>index af08f6d5efb4aaa86b104a49c9855f20725b6808..0000000000000000000000000000000000000000
>--- a/Source/WebKit/Platform/cg/CGUtilities.cpp
>+++ /dev/null
>@@ -1,49 +0,0 @@
>-/*
>- * Copyright (C) 2011 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#include "config.h"
>-#include "CGUtilities.h"
>-
>-namespace WebKit {
>-
>-void paintImage(CGContextRef context, CGImageRef image, CGFloat scaleFactor, CGPoint destination, CGRect source)
>-{
>-    CGContextSaveGState(context);
>-
>-    CGContextClipToRect(context, CGRectMake(destination.x, destination.y, source.size.width, source.size.height));
>-    CGContextScaleCTM(context, 1, -1);
>-
>-    CGFloat imageHeight = CGImageGetHeight(image) / scaleFactor;
>-    CGFloat imageWidth = CGImageGetWidth(image) / scaleFactor;
>-
>-    CGFloat destX = destination.x - source.origin.x;
>-    CGFloat destY = -imageHeight - destination.y + source.origin.y;
>-
>-    CGContextDrawImage(context, CGRectMake(destX, destY, imageWidth, imageHeight), image);
>-
>-    CGContextRestoreGState(context);
>-}
>-
>-} // namespace WebKit
>diff --git a/Source/WebKit/Platform/cg/CGUtilities.h b/Source/WebKit/Platform/cg/CGUtilities.h
>deleted file mode 100644
>index 851d181a8fc7573c930cfc603b0f41428747b22d..0000000000000000000000000000000000000000
>--- a/Source/WebKit/Platform/cg/CGUtilities.h
>+++ /dev/null
>@@ -1,35 +0,0 @@
>-/*
>- * Copyright (C) 2011 Apple Inc. All rights reserved.
>- *
>- * Redistribution and use in source and binary forms, with or without
>- * modification, are permitted provided that the following conditions
>- * are met:
>- * 1. Redistributions of source code must retain the above copyright
>- *    notice, this list of conditions and the following disclaimer.
>- * 2. Redistributions in binary form must reproduce the above copyright
>- *    notice, this list of conditions and the following disclaimer in the
>- *    documentation and/or other materials provided with the distribution.
>- *
>- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>- * THE POSSIBILITY OF SUCH DAMAGE.
>- */
>-
>-#ifndef CGUtilities_h
>-#define CGUtilities_h
>-
>-namespace WebKit {
>-
>-void paintImage(CGContextRef, CGImageRef, CGFloat scaleFactor, CGPoint destination, CGRect source);
>-
>-} // namespace WebKit
>-
>-#endif // CGUtilities_h
>diff --git a/Source/WebKit/Shared/cg/ShareableBitmapCG.cpp b/Source/WebKit/Shared/cg/ShareableBitmapCG.cpp
>index 41b2fea32b153f3bf4fef6592e29e23542e6545f..bedeeaf9a1af035bfdbe0d2a8ca6e6130cc7c3d6 100644
>--- a/Source/WebKit/Shared/cg/ShareableBitmapCG.cpp
>+++ b/Source/WebKit/Shared/cg/ShareableBitmapCG.cpp
>@@ -32,7 +32,6 @@
> #include <pal/spi/cg/CoreGraphicsSPI.h>
> #include <pal/spi/cocoa/IOSurfaceSPI.h>
> #include <wtf/RetainPtr.h>
>-#include "CGUtilities.h"
> 
> using namespace WebCore;
> 
>@@ -103,12 +102,12 @@ std::unique_ptr<GraphicsContext> ShareableBitmap::createGraphicsContext()
> 
> void ShareableBitmap::paint(WebCore::GraphicsContext& context, const IntPoint& destination, const IntRect& source)
> {
>-    paintImage(context.platformContext(), makeCGImageCopy().get(), 1, destination, source);
>+    paint(context, 1, destination, source);
> }
> 
> void ShareableBitmap::paint(WebCore::GraphicsContext& context, float scaleFactor, const IntPoint& destination, const IntRect& source)
> {
>-    paintImage(context.platformContext(), makeCGImageCopy().get(), scaleFactor, destination, source);
>+    context.drawNativeScaledImage(makeCGImageCopy().get(), scaleFactor, destination, source);
> }
> 
> RetainPtr<CGImageRef> ShareableBitmap::makeCGImageCopy()
>diff --git a/Source/WebKit/WebKit.xcodeproj/project.pbxproj b/Source/WebKit/WebKit.xcodeproj/project.pbxproj
>index 6a6f113940a7cc448c6bbb87ef4342671f0bd161..b4457a840fec77d840aba53e32ced7feb5864785 100644
>--- a/Source/WebKit/WebKit.xcodeproj/project.pbxproj
>+++ b/Source/WebKit/WebKit.xcodeproj/project.pbxproj
>@@ -355,8 +355,6 @@
> 		1A9FBA8D13FF04E600DEED67 /* PluginComplexTextInputState.h in Headers */ = {isa = PBXBuildFile; fileRef = 1A9FBA8C13FF04E600DEED67 /* PluginComplexTextInputState.h */; };
> 		1AA13212191D5924009C1489 /* WKNavigationResponsePrivate.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA13211191D5924009C1489 /* WKNavigationResponsePrivate.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		1AA20D5118AD50E0005D1ED4 /* WKNavigationDelegatePrivate.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA20D5018AD50E0005D1ED4 /* WKNavigationDelegatePrivate.h */; settings = {ATTRIBUTES = (Private, ); }; };
>-		1AA2E51D12E4C05E00BC4966 /* CGUtilities.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA2E51B12E4C05E00BC4966 /* CGUtilities.h */; };
>-		1AA2E51E12E4C05E00BC4966 /* CGUtilities.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1AA2E51C12E4C05E00BC4966 /* CGUtilities.cpp */; };
> 		1AA2E56618D77508003814BD /* WKWebProcessBundleParameters.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1AA2E56418D77508003814BD /* WKWebProcessBundleParameters.mm */; };
> 		1AA2E56718D77508003814BD /* WKWebProcessBundleParameters.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AA2E56518D77508003814BD /* WKWebProcessBundleParameters.h */; };
> 		1AA3D75B1651B44F008713D0 /* RemoteLayerTreeHost.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1AA3D7591651B44F008713D0 /* RemoteLayerTreeHost.mm */; };
>@@ -2792,8 +2790,6 @@
> 		1AA1CC5C100FA1A10078DEBC /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = /System/Library/Frameworks/QuartzCore.framework; sourceTree = "<absolute>"; };
> 		1AA1CD06100FA1BA0078DEBC /* Carbon.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Carbon.framework; path = /System/Library/Frameworks/Carbon.framework; sourceTree = "<absolute>"; };
> 		1AA20D5018AD50E0005D1ED4 /* WKNavigationDelegatePrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WKNavigationDelegatePrivate.h; sourceTree = "<group>"; };
>-		1AA2E51B12E4C05E00BC4966 /* CGUtilities.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CGUtilities.h; sourceTree = "<group>"; };
>-		1AA2E51C12E4C05E00BC4966 /* CGUtilities.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CGUtilities.cpp; sourceTree = "<group>"; };
> 		1AA2E56418D77508003814BD /* WKWebProcessBundleParameters.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WKWebProcessBundleParameters.mm; sourceTree = "<group>"; };
> 		1AA2E56518D77508003814BD /* WKWebProcessBundleParameters.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WKWebProcessBundleParameters.h; sourceTree = "<group>"; };
> 		1AA3D7591651B44F008713D0 /* RemoteLayerTreeHost.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = RemoteLayerTreeHost.mm; sourceTree = "<group>"; };
>@@ -5303,15 +5299,6 @@
> 			path = mac;
> 			sourceTree = "<group>";
> 		};
>-		1AA2E51A12E4C05600BC4966 /* cg */ = {
>-			isa = PBXGroup;
>-			children = (
>-				1AA2E51C12E4C05E00BC4966 /* CGUtilities.cpp */,
>-				1AA2E51B12E4C05E00BC4966 /* CGUtilities.h */,
>-			);
>-			path = cg;
>-			sourceTree = "<group>";
>-		};
> 		1AAC4DDE16B1CBF6009425E3 /* WebStorage */ = {
> 			isa = PBXGroup;
> 			children = (
>@@ -8014,7 +8001,6 @@
> 			isa = PBXGroup;
> 			children = (
> 				3709504118A88BA40087AE5D /* cf */,
>-				1AA2E51A12E4C05600BC4966 /* cg */,
> 				6BE969C21E54D467008B7483 /* classifier */,
> 				4450AEBE1DC3FAAC009943F2 /* cocoa */,
> 				3709504218A88CDE0087AE5D /* foundation */,
>@@ -9064,7 +9050,6 @@
> 				41897ED81F415D8A0016FA42 /* CacheStorageEngine.h in Headers */,
> 				41FABD2A1F4DE001006A6C97 /* CacheStorageEngineCache.h in Headers */,
> 				41897EDA1F415D8A0016FA42 /* CacheStorageEngineConnection.h in Headers */,
>-				1AA2E51D12E4C05E00BC4966 /* CGUtilities.h in Headers */,
> 				1A2D956F12848564001EB962 /* ChildProcess.h in Headers */,
> 				51FAEC3A1B0657630009C4E7 /* ChildProcessMessages.h in Headers */,
> 				E1513C67166EABB200149FCB /* ChildProcessProxy.h in Headers */,
>@@ -10859,7 +10844,6 @@
> 				4135FBD11F4FB8090074C47B /* CacheStorageEngineCaches.cpp in Sources */,
> 				41897ED91F415D8A0016FA42 /* CacheStorageEngineConnection.cpp in Sources */,
> 				517CF0E3163A486C00C2950F /* CacheStorageEngineConnectionMessageReceiver.cpp in Sources */,
>-				1AA2E51E12E4C05E00BC4966 /* CGUtilities.cpp in Sources */,
> 				1A2D957012848564001EB962 /* ChildProcess.cpp in Sources */,
> 				1A698F191E4910220064E881 /* ChildProcessCocoa.mm in Sources */,
> 				A7E93CED1925331100A1DC48 /* ChildProcessIOS.mm in Sources */,
>diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
>index 3f4320dd41f7b9c7329728a5e056b54076dafac8..a35dbb760e99e291cbf03a4f036010b78a7e0cc0 100644
>--- a/LayoutTests/ChangeLog
>+++ b/LayoutTests/ChangeLog
>@@ -1,3 +1,31 @@
>+2018-07-25  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Enable DisplayList recording for ShareableBitmap::paint()
>+        https://bugs.webkit.org/show_bug.cgi?id=187841
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Re-baseline the expected result of one of the display list tests.
>+
>+        * displaylists/layer-dispay-list-expected.txt:
>+
>+2018-07-17  Said Abou-Hallawa  <sabouhallawa@apple.com>
>+
>+        Templatize DisplayListItems and use std::tuple to store the arguments
>+        https://bugs.webkit.org/show_bug.cgi?id=187002
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Rebaseline existing layout tests.
>+
>+        * displaylists/canvas-display-list-expected.txt:
>+        * displaylists/extent-includes-shadow-expected.txt:
>+        * displaylists/extent-includes-transforms-expected.txt:
>+        * displaylists/layer-dispay-list-expected.txt:
>+        * displaylists/replay-skip-clipped-rect-expected.txt:
>+        * platform/mac-wk1/displaylists/extent-includes-shadow-expected.txt:
>+        * platform/mac-wk1/displaylists/extent-includes-transforms-expected.txt:
>+
> 2018-07-25  Zalan Bujtas  <zalan@apple.com>
> 
>         REGRESSION(r227577) Text on TV & Movies page doesn't wrap properly in iTunes
>diff --git a/LayoutTests/displaylists/canvas-display-list-expected.txt b/LayoutTests/displaylists/canvas-display-list-expected.txt
>index a883e6852e1842df969fbcae256a2787cf96bfc9..7c7a894deb1d3c3063980d6b6070e03b99742acd 100644
>--- a/LayoutTests/displaylists/canvas-display-list-expected.txt
>+++ b/LayoutTests/displaylists/canvas-display-list-expected.txt
>@@ -1,13 +1,15 @@
>  
> (set-state
>-  (change-flags 256)
>-  (fill-color #C80000))
>+  (state-change 
>+    (change-flags 256)
>+    (fill-color #C80000)))
> (fill-rect
>   (extent at (10,10) size 55x50)
>   (rect at (10,10) size 55x50))
> (set-state
>-  (change-flags 256)
>-  (fill-color #0000C87F))
>+  (state-change 
>+    (change-flags 256)
>+    (fill-color #0000C87F)))
> (fill-rect
>   (extent at (30,30) size 55x50)
>   (rect at (30,30) size 55x50))
>diff --git a/LayoutTests/displaylists/extent-includes-shadow-expected.txt b/LayoutTests/displaylists/extent-includes-shadow-expected.txt
>index de698ae64db62c6c49a22e0bb9efc657348ebfc8..9987bae1aa86ebe7fcba5aa7c6892d2dd0b21916 100644
>--- a/LayoutTests/displaylists/extent-includes-shadow-expected.txt
>+++ b/LayoutTests/displaylists/extent-includes-shadow-expected.txt
>@@ -5,14 +5,15 @@
> (save
>   (restore-index 4))
> (set-state
>-  (change-flags 1024)
>-  (shadow-blur 12.00)
>-  (shadow-offset width=10 height=20)
>-  (shadows-use-legacy-radius 0))
>+  (state-change 
>+    (change-flags 1024)
>+    (shadow-blur 12.00)
>+    (shadow-offset width=10 height=20)
>+    (shadows-use-legacy-radius 0)))
> (fill-composited-rect
>   (extent at (43,50) size 134x137)
>   (rect at (50,50) size 100x100)
>   (color #0000FF)
>-  (composite-operation source-over)
>+  (composite-operator source-over)
>   (blend-mode normal))
> (restore)
>diff --git a/LayoutTests/displaylists/extent-includes-transforms-expected.txt b/LayoutTests/displaylists/extent-includes-transforms-expected.txt
>index 848b077545a7c680270eee1ba01fbbd1e8bcc3fc..054e34a4528ffae34e9b143735d7eb6352d830c2 100644
>--- a/LayoutTests/displaylists/extent-includes-transforms-expected.txt
>+++ b/LayoutTests/displaylists/extent-includes-transforms-expected.txt
>@@ -2,19 +2,20 @@
> (translate
>   (x 0.00)
>   (y 22.00))
>-(concatentate-ctm
>+(concatenate-ctm
>   (ctm {m=((0.87,0.50)(-0.50,0.87)) t=(81.70,-18.30)}))
> (save
>   (restore-index 5))
> (set-state
>-  (change-flags 1024)
>-  (shadow-blur 12.00)
>-  (shadow-offset width=10 height=20)
>-  (shadows-use-legacy-radius 0))
>+  (state-change 
>+    (change-flags 1024)
>+    (shadow-blur 12.00)
>+    (shadow-offset width=10 height=20)
>+    (shadows-use-legacy-radius 0)))
> (fill-composited-rect
>   (extent at (7.14,0.20) size 184.55x185.65)
>   (rect at (0,0) size 100x100)
>   (color #0000FF)
>-  (composite-operation source-over)
>+  (composite-operator source-over)
>   (blend-mode normal))
> (restore)
>diff --git a/LayoutTests/displaylists/layer-dispay-list-expected.txt b/LayoutTests/displaylists/layer-dispay-list-expected.txt
>index c5f6ac6b25a987fb04eee9a11910bef61f731a33..b9f5bf9e485bc0d43912baf15fd65a88dc381eeb 100644
>--- a/LayoutTests/displaylists/layer-dispay-list-expected.txt
>+++ b/LayoutTests/displaylists/layer-dispay-list-expected.txt
>@@ -6,26 +6,27 @@
>   (extent at (0,0) size 104x104)
>   (rect at (0,0) size 104x104)
>   (color #008000)
>-  (composite-operation source-over)
>+  (composite-operator source-over)
>   (blend-mode normal))
> (set-state
>-  (change-flags 131456)
>-  (fill-color #0000FF)
>-  (stroke-style 0)
>-  (should-antialias 0))
>+  (state-change 
>+    (change-flags 131456)
>+    (fill-color #0000FF)
>+    (stroke-style 0)
>+    (should-antialias 0)))
> (draw-rect
>-  (extent at (0,0) size 104x2)
>+  (extent at (0,0) size 104x2.50)
>   (rect at (0,0) size 104x2)
>   (border-thickness 1.00))
> (draw-rect
>-  (extent at (0,102) size 104x2)
>+  (extent at (0,101.50) size 104x2.50)
>   (rect at (0,102) size 104x2)
>   (border-thickness 1.00))
> (draw-rect
>-  (extent at (0,0) size 2x104)
>+  (extent at (0,0) size 2.50x104)
>   (rect at (0,0) size 2x104)
>   (border-thickness 1.00))
> (draw-rect
>-  (extent at (102,0) size 2x104)
>+  (extent at (101.50,0) size 2.50x104)
>   (rect at (102,0) size 2x104)
>   (border-thickness 1.00))
>diff --git a/LayoutTests/displaylists/replay-skip-clipped-rect-expected.txt b/LayoutTests/displaylists/replay-skip-clipped-rect-expected.txt
>index bf7ef275f61855a6251b6176db17dd02e9048ec3..5e1fc968b45ab7c11714cf3b75e26f7842f3d789 100644
>--- a/LayoutTests/displaylists/replay-skip-clipped-rect-expected.txt
>+++ b/LayoutTests/displaylists/replay-skip-clipped-rect-expected.txt
>@@ -6,7 +6,7 @@ recorded:
>   (extent at (412,0) size 100x100)
>   (rect at (412,0) size 100x100)
>   (color #0000FF)
>-  (composite-operation source-over)
>+  (composite-operator source-over)
>   (blend-mode normal))
> 
> replayed: 
>diff --git a/LayoutTests/platform/mac-wk1/displaylists/extent-includes-shadow-expected.txt b/LayoutTests/platform/mac-wk1/displaylists/extent-includes-shadow-expected.txt
>index 210e44b0877c040ca852420dd97b42c0eac176c5..11e7e01e98883b0fc36133b22c052aaf7cc9d071 100644
>--- a/LayoutTests/platform/mac-wk1/displaylists/extent-includes-shadow-expected.txt
>+++ b/LayoutTests/platform/mac-wk1/displaylists/extent-includes-shadow-expected.txt
>@@ -5,15 +5,16 @@
> (save
>   (restore-index 4))
> (set-state
>-  (change-flags 525312)
>-  (shadow-blur 12.00)
>-  (shadow-offset width=10 height=20)
>-  (shadows-use-legacy-radius 0)
>-  (should-subpixel-quantize-fonts 0))
>+  (state-change 
>+    (change-flags 525312)
>+    (shadow-blur 12.00)
>+    (shadow-offset width=10 height=20)
>+    (shadows-use-legacy-radius 0)
>+    (should-subpixel-quantize-fonts 0)))
> (fill-composited-rect
>   (extent at (43,50) size 134x137)
>   (rect at (50,50) size 100x100)
>   (color #0000FF)
>-  (composite-operation source-over)
>+  (composite-operator source-over)
>   (blend-mode normal))
> (restore)
>diff --git a/LayoutTests/platform/mac-wk1/displaylists/extent-includes-transforms-expected.txt b/LayoutTests/platform/mac-wk1/displaylists/extent-includes-transforms-expected.txt
>index 384e98129dc7ebcdd896d310fa8c75d3653abb7f..afcc8c4a941eb9ce135219751651e911fe07c707 100644
>--- a/LayoutTests/platform/mac-wk1/displaylists/extent-includes-transforms-expected.txt
>+++ b/LayoutTests/platform/mac-wk1/displaylists/extent-includes-transforms-expected.txt
>@@ -2,20 +2,21 @@
> (translate
>   (x 0.00)
>   (y 22.00))
>-(concatentate-ctm
>+(concatenate-ctm
>   (ctm {m=((0.87,0.50)(-0.50,0.87)) t=(81.70,-18.30)}))
> (save
>   (restore-index 5))
> (set-state
>-  (change-flags 525312)
>-  (shadow-blur 12.00)
>-  (shadow-offset width=10 height=20)
>-  (shadows-use-legacy-radius 0)
>-  (should-subpixel-quantize-fonts 0))
>+  (state-change 
>+    (change-flags 525312)
>+    (shadow-blur 12.00)
>+    (shadow-offset width=10 height=20)
>+    (shadows-use-legacy-radius 0)
>+    (should-subpixel-quantize-fonts 0)))
> (fill-composited-rect
>   (extent at (7.14,0.20) size 184.55x185.65)
>   (rect at (0,0) size 100x100)
>   (color #0000FF)
>-  (composite-operation source-over)
>+  (composite-operator source-over)
>   (blend-mode normal))
> (restore)

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Attachments on bug 187841: 345430 | 345443 | 345447 | 345449 | 345727 | 345935