Attachment 361472 Details for Bug 194422 – Patch

[patch] Patch

bug-194422-20190207170111.patch (text/plain), 107.31 KB, created by Chris Dumez on 2019-02-07 17:01:12 PST

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Creator: Chris Dumez

Created: 2019-02-07 17:01:12 PST

Size: 107.31 KB

patch

obsolete

>Subversion Revision: 241026
>diff --git a/Source/WTF/ChangeLog b/Source/WTF/ChangeLog
>index 65684330426e758849b51e259223d37e3270e59e..ab00ac9830c86a2efb64fa649deca7e3afc41632 100644
>--- a/Source/WTF/ChangeLog
>+++ b/Source/WTF/ChangeLog
>@@ -1,3 +1,16 @@
>+2019-02-07  Chris Dumez  <cdumez@apple.com>
>+
>+        Mark more heap-allocated classes as fast allocated
>+        https://bugs.webkit.org/show_bug.cgi?id=194422
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * wtf/Function.h:
>+        (WTF::Function<Out):
>+        * wtf/RefCounter.h:
>+        * wtf/URL.h:
>+        * wtf/text/StringView.cpp:
>+
> 2019-02-05  Keith Rollin  <krollin@apple.com>
> 
>         Enable the automatic checking and regenerations of .xcfilelists during builds
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 33d6584bfde7103e976f58b1fc02237b35e53aa0..020c6b5bdc2667dd21b1194176f7e1a45b0d2c54 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,129 @@
>+2019-02-07  Chris Dumez  <cdumez@apple.com>
>+
>+        Mark more heap-allocated classes as fast allocated
>+        https://bugs.webkit.org/show_bug.cgi?id=194422
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * Modules/applepay/PaymentCoordinator.h:
>+        * Modules/beacon/NavigatorBeacon.h:
>+        * Modules/cache/DOMWindowCaches.h:
>+        * Modules/cache/WorkerGlobalScopeCaches.h:
>+        * Modules/credentialmanagement/NavigatorCredentials.h:
>+        * Modules/encryptedmedia/legacy/LegacyCDMPrivateClearKey.h:
>+        * Modules/gamepad/NavigatorGamepad.h:
>+        * Modules/indexeddb/IDBGetAllResult.h:
>+        * Modules/indexeddb/IDBGetResult.h:
>+        * Modules/indexeddb/IDBKeyData.h:
>+        * Modules/indexeddb/IDBValue.h:
>+        * Modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h:
>+        * Modules/indexeddb/server/IndexValueEntry.h:
>+        * Modules/indexeddb/server/IndexValueStore.h:
>+        * Modules/indexeddb/server/MemoryBackingStoreTransaction.h:
>+        * Modules/indexeddb/server/MemoryCursor.h:
>+        * Modules/indexeddb/server/MemoryIDBBackingStore.h:
>+        * Modules/indexeddb/server/SQLiteIDBBackingStore.h:
>+        * Modules/indexeddb/server/SQLiteIDBCursor.h:
>+        * Modules/indexeddb/server/SQLiteIDBTransaction.h:
>+        * Modules/indexeddb/server/UniqueIDBDatabase.h:
>+        * Modules/indexeddb/shared/IDBDatabaseInfo.h:
>+        * Modules/indexeddb/shared/IDBResourceIdentifier.h:
>+        * Modules/indexeddb/shared/IDBTransactionInfo.h:
>+        * Modules/mediacapabilities/NavigatorMediaCapabilities.h:
>+        * Modules/mediasession/WebMediaSessionManager.cpp:
>+        * Modules/mediastream/NavigatorMediaDevices.h:
>+        * Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.h:
>+        * Modules/mediastream/libwebrtc/LibWebRTCRtpReceiverBackend.h:
>+        * Modules/mediastream/libwebrtc/LibWebRTCRtpSenderBackend.h:
>+        * Modules/mediastream/libwebrtc/LibWebRTCRtpTransceiverBackend.h:
>+        * Modules/navigatorcontentutils/NavigatorContentUtils.h:
>+        * Modules/quota/DOMWindowQuota.h:
>+        * Modules/quota/NavigatorStorageQuota.h:
>+        * Modules/quota/WorkerNavigatorStorageQuota.h:
>+        * Modules/speech/DOMWindowSpeechSynthesis.h:
>+        * Modules/webaudio/BiquadProcessor.h:
>+        * Modules/webaudio/DelayProcessor.h:
>+        * Modules/webauthn/fido/FidoHidPacket.h:
>+        * Modules/webdriver/NavigatorWebDriver.h:
>+        * Modules/webgpu/DOMWindowWebGPU.h:
>+        * Modules/websockets/WebSocketChannel.h:
>+        * Modules/webvr/NavigatorWebVR.h:
>+        * accessibility/AXObjectCache.h:
>+        * bindings/js/DOMGCOutputConstraint.h:
>+        * bindings/js/DOMPromiseProxy.h:
>+        * bridge/c/c_runtime.h:
>+        * contentextensions/CombinedURLFilters.cpp:
>+        * crypto/CryptoAlgorithmParameters.h:
>+        * css/CSSComputedStyleDeclaration.h:
>+        * css/CSSRegisteredCustomProperty.h:
>+        * css/DOMCSSPaintWorklet.h:
>+        * css/DOMCSSRegisterCustomProperty.h:
>+        * css/StyleRule.h:
>+        * dom/ConstantPropertyMap.h:
>+        * dom/CustomElementReactionQueue.h:
>+        * dom/Document.h:
>+        * dom/GenericEventQueue.h:
>+        * dom/RejectedPromiseTracker.h:
>+        * dom/UserGestureIndicator.h:
>+        * editing/ReplaceSelectionCommand.cpp:
>+        * editing/SelectionRectGatherer.h:
>+        * editing/TextIterator.h:
>+        * editing/cocoa/HTMLConverter.mm:
>+        * fileapi/AsyncFileStream.cpp:
>+        * fileapi/AsyncFileStream.h:
>+        * html/forms/FileIconLoader.h:
>+        * html/parser/HTMLTreeBuilder.h:
>+        * html/track/WebVTTParser.h:
>+        * inspector/DOMPatchSupport.cpp:
>+        * loader/FrameLoaderClient.h:
>+        * loader/WorkerThreadableLoader.cpp:
>+        * page/IntersectionObserver.h:
>+        * page/PerformanceMonitor.h:
>+        * page/PerformanceUserTiming.h:
>+        * page/PrintContext.h:
>+        * page/ValidationMessageClient.h:
>+        * platform/ColorChooser.h:
>+        * platform/ControlStates.h:
>+        * platform/DataListSuggestionPicker.h:
>+        * platform/FileStream.h:
>+        * platform/KeyedCoding.h:
>+        * platform/LowPowerModeNotifier.h:
>+        * platform/PlatformSpeechSynthesizer.h:
>+        * platform/WebGLStateTracker.h:
>+        * platform/audio/AudioArray.h:
>+        * platform/audio/AudioDestination.h:
>+        * platform/audio/DownSampler.h:
>+        * platform/audio/DynamicsCompressor.h:
>+        * platform/audio/FFTFrame.h:
>+        * platform/audio/HRTFDatabase.h:
>+        * platform/audio/MultiChannelResampler.h:
>+        * platform/audio/Panner.h:
>+        * platform/audio/Reverb.h:
>+        * platform/audio/ReverbConvolver.h:
>+        * platform/audio/ReverbConvolverStage.h:
>+        * platform/audio/UpSampler.h:
>+        * platform/audio/mac/AudioSessionMac.cpp:
>+        * platform/audio/mac/CAAudioStreamDescription.h:
>+        * platform/audio/mac/CARingBuffer.h:
>+        * platform/cocoa/ScrollSnapAnimatorState.h:
>+        * platform/gamepad/PlatformGamepad.h:
>+        * platform/graphics/GraphicsLayer.cpp:
>+        * platform/graphics/GraphicsLayerFactory.h:
>+        * platform/graphics/PlatformTimeRanges.h:
>+        * platform/graphics/TextTrackRepresentation.h:
>+        * platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.h:
>+        * platform/graphics/avfoundation/objc/CDMSessionAVStreamSession.h:
>+        * platform/graphics/avfoundation/objc/MediaPlaybackTargetPickerMac.h:
>+        * platform/graphics/displaylists/DisplayListRecorder.h:
>+        * platform/network/cocoa/WebCoreNSURLSession.mm:
>+        * platform/sql/SQLiteDatabase.h:
>+        * platform/text/TextCodecICU.h:
>+        * rendering/GridBaselineAlignment.h:
>+        * rendering/GridTrackSizingAlgorithm.h:
>+        * rendering/RenderObject.h:
>+        * rendering/style/GridArea.h:
>+        * workers/service/context/SWContextManager.h:
>+
> 2019-02-06  Zalan Bujtas  <zalan@apple.com>
> 
>         [LFC][IFC] Move line layout code to a dedicated file
>diff --git a/Source/WebCore/PAL/ChangeLog b/Source/WebCore/PAL/ChangeLog
>index 0486533c220e50529b2bf4d0b61511f0a1aa306f..ad7844b9aeb7571e2cbae1556aef6c96c8e3fd7e 100644
>--- a/Source/WebCore/PAL/ChangeLog
>+++ b/Source/WebCore/PAL/ChangeLog
>@@ -1,3 +1,13 @@
>+2019-02-07  Chris Dumez  <cdumez@apple.com>
>+
>+        Mark more heap-allocated classes as fast allocated
>+        https://bugs.webkit.org/show_bug.cgi?id=194422
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * pal/crypto/openssl/CryptoDigestOpenSSL.cpp:
>+        * pal/system/Clock.h:
>+
> 2019-02-05  Ryan Haddad  <ryanhaddad@apple.com>
> 
>         Unreviewed, rolling out r240742.
>diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
>index 21410d87caf3b1bff6270e6279089b7194cb14fe..c368764e59008814c6a8317b9c4a64e1b3ba0592 100644
>--- a/Source/WebKit/ChangeLog
>+++ b/Source/WebKit/ChangeLog
>@@ -1,3 +1,57 @@
>+2019-02-07  Chris Dumez  <cdumez@apple.com>
>+
>+        Mark more heap-allocated classes as fast allocated
>+        https://bugs.webkit.org/show_bug.cgi?id=194422
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * NetworkProcess/NetworkLoad.cpp:
>+        * NetworkProcess/NetworkLoadChecker.h:
>+        * NetworkProcess/NetworkResourceLoader.cpp:
>+        * Platform/IPC/Connection.h:
>+        * Platform/IPC/mac/ImportanceAssertion.h:
>+        * PluginProcess/PluginCreationParameters.h:
>+        * Shared/API/Cocoa/RemoteObjectRegistry.h:
>+        * Shared/WebEvent.h:
>+        * UIProcess/API/APIHTTPCookieStore.cpp:
>+        * UIProcess/API/APINotificationProvider.h:
>+        * UIProcess/API/Cocoa/PageLoadStateObserver.h:
>+        * UIProcess/API/Cocoa/WKHTTPCookieStore.mm:
>+        * UIProcess/API/Cocoa/WKWebView.mm:
>+        (-[WKWebView _setInputDelegate:]):
>+        * UIProcess/API/gtk/PageClientImpl.h:
>+        * UIProcess/BackingStore.h:
>+        * UIProcess/Cocoa/AutomationClient.h:
>+        * UIProcess/Cocoa/DiagnosticLoggingClient.h:
>+        * UIProcess/Cocoa/DownloadClient.h:
>+        * UIProcess/Cocoa/FindClient.h:
>+        * UIProcess/Cocoa/NavigationState.h:
>+        * UIProcess/Cocoa/UIDelegate.h:
>+        * UIProcess/Cocoa/ViewGestureController.h:
>+        * UIProcess/DeviceIdHashSaltStorage.h:
>+        * UIProcess/Downloads/DownloadProxyMap.h:
>+        * UIProcess/Gamepad/UIGamepad.h:
>+        * UIProcess/Notifications/WebNotificationProvider.h:
>+        * UIProcess/ProcessAssertion.h:
>+        * UIProcess/RemoteLayerTree/RemoteLayerTreeHost.h:
>+        * UIProcess/WebContextInjectedBundleClient.h:
>+        * UIProcess/WebFormClient.h:
>+        * UIProcess/WebGeolocationProvider.h:
>+        * UIProcess/WebPageProxy.h:
>+        * WebProcess/Automation/WebAutomationSessionProxy.h:
>+        * WebProcess/InjectedBundle/API/APIInjectedBundleBundleClient.h:
>+        * WebProcess/InjectedBundle/API/APIInjectedBundleEditorClient.h:
>+        * WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h:
>+        * WebProcess/InjectedBundle/API/APIInjectedBundlePageLoaderClient.h:
>+        * WebProcess/InjectedBundle/API/APIInjectedBundlePageResourceLoadClient.h:
>+        * WebProcess/InjectedBundle/API/APIInjectedBundlePageUIClient.h:
>+        * WebProcess/InjectedBundle/APIInjectedBundleFormClient.h:
>+        * WebProcess/Network/webrtc/LibWebRTCNetwork.h:
>+        * WebProcess/Network/webrtc/LibWebRTCSocket.h:
>+        * WebProcess/Network/webrtc/WebRTCResolver.h:
>+        * WebProcess/WebCoreSupport/WebInspectorClient.cpp:
>+        * WebProcess/WebPage/DrawingArea.h:
>+
> 2019-02-06  Per Arne Vollan  <pvollan@apple.com>
> 
>         Roll out parts of r238819 since it is a PLT performance regression.
>diff --git a/Source/WTF/wtf/Function.h b/Source/WTF/wtf/Function.h
>index 22789afd85bcecb7ecaea4fcf1477a00e2541dd2..3ea4123c7565525775bef8af5ff5ce2672baaf6b 100644
>--- a/Source/WTF/wtf/Function.h
>+++ b/Source/WTF/wtf/Function.h
>@@ -34,6 +34,7 @@ template<typename> class Function;
> 
> template <typename Out, typename... In>
> class Function<Out(In...)> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     Function() = default;
>     Function(std::nullptr_t) { }
>diff --git a/Source/WTF/wtf/RefCounter.h b/Source/WTF/wtf/RefCounter.h
>index 605c44a97cfb2dbba2a78df6d1f60607e446fade..a5f68af2b3b8da404d376f6f185ea199157a6a59 100644
>--- a/Source/WTF/wtf/RefCounter.h
>+++ b/Source/WTF/wtf/RefCounter.h
>@@ -36,6 +36,7 @@ enum class RefCounterEvent { Decrement, Increment };
> 
> template<typename T>
> class RefCounter {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(RefCounter);
> 
>     class Count {
>diff --git a/Source/WTF/wtf/URL.h b/Source/WTF/wtf/URL.h
>index 9427c3a8922f448b568a5788cda4bfb9ea978b8d..849741c66bfa2b999e500851ee0d9680b32d483b 100644
>--- a/Source/WTF/wtf/URL.h
>+++ b/Source/WTF/wtf/URL.h
>@@ -49,6 +49,7 @@ public:
> struct URLHash;
> 
> class WTF_EXPORT_PRIVATE URL {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     // Generates a URL which contains a null string.
>     URL() { invalidate(); }
>diff --git a/Source/WTF/wtf/text/StringView.cpp b/Source/WTF/wtf/text/StringView.cpp
>index f36b92f9636a6dcbdb3aac9b8cdae117701c1c5a..77bac45209534e52c81e83df6ed7f32087e7f0d5 100644
>--- a/Source/WTF/wtf/text/StringView.cpp
>+++ b/Source/WTF/wtf/text/StringView.cpp
>@@ -128,6 +128,7 @@ auto StringView::SplitResult::Iterator::operator++() -> Iterator&
> }
> 
> class StringView::GraphemeClusters::Iterator::Impl {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     Impl(const StringView& stringView, Optional<NonSharedCharacterBreakIterator>&& iterator, unsigned index)
>         : m_stringView(stringView)
>diff --git a/Source/WebCore/Modules/applepay/PaymentCoordinator.h b/Source/WebCore/Modules/applepay/PaymentCoordinator.h
>index f93c545513a9355670912584b1ea17bf2ecb9116..0142de5d05ab36250829e14c0057a70b3d24c15b 100644
>--- a/Source/WebCore/Modules/applepay/PaymentCoordinator.h
>+++ b/Source/WebCore/Modules/applepay/PaymentCoordinator.h
>@@ -45,6 +45,7 @@ struct ShippingContactUpdate;
> struct ShippingMethodUpdate;
> 
> class PaymentCoordinator {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT explicit PaymentCoordinator(PaymentCoordinatorClient&);
>     WEBCORE_EXPORT ~PaymentCoordinator();
>diff --git a/Source/WebCore/Modules/beacon/NavigatorBeacon.h b/Source/WebCore/Modules/beacon/NavigatorBeacon.h
>index f66ebe81bb6cf54475a7fb08a93364bc005877ca..3cd270f916d8f70a941b6987f6ea287fb62493aa 100644
>--- a/Source/WebCore/Modules/beacon/NavigatorBeacon.h
>+++ b/Source/WebCore/Modules/beacon/NavigatorBeacon.h
>@@ -40,6 +40,7 @@ class Navigator;
> class ResourceError;
> 
> class NavigatorBeacon final : public Supplement<Navigator>, private CachedRawResourceClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit NavigatorBeacon(Navigator&);
>     ~NavigatorBeacon();
>diff --git a/Source/WebCore/Modules/cache/DOMWindowCaches.h b/Source/WebCore/Modules/cache/DOMWindowCaches.h
>index 0ae946894eba97574d953befe2da582dcffdf32e..b72762864e3db43f46e7fc0913eb3be4e5d0f040 100644
>--- a/Source/WebCore/Modules/cache/DOMWindowCaches.h
>+++ b/Source/WebCore/Modules/cache/DOMWindowCaches.h
>@@ -36,6 +36,7 @@ class DOMCacheStorage;
> class ScriptExecutionContext;
> 
> class DOMWindowCaches : public Supplement<DOMWindow>, public DOMWindowProperty {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DOMWindowCaches(DOMWindow*);
> 
>diff --git a/Source/WebCore/Modules/cache/WorkerGlobalScopeCaches.h b/Source/WebCore/Modules/cache/WorkerGlobalScopeCaches.h
>index a50b4a34c800837694d31b633595dc238cb89e94..44efc09ebbb86305f6e531d11f249a6294df9209 100644
>--- a/Source/WebCore/Modules/cache/WorkerGlobalScopeCaches.h
>+++ b/Source/WebCore/Modules/cache/WorkerGlobalScopeCaches.h
>@@ -33,6 +33,7 @@ class DOMCacheStorage;
> class WorkerGlobalScope;
> 
> class WorkerGlobalScopeCaches : public Supplement<WorkerGlobalScope> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WorkerGlobalScopeCaches(WorkerGlobalScope& scope)
>         : m_scope(scope)
>diff --git a/Source/WebCore/Modules/credentialmanagement/NavigatorCredentials.h b/Source/WebCore/Modules/credentialmanagement/NavigatorCredentials.h
>index 3ffcbae55e8394d402abbb816a7b2126c5d60313..b074396b10f3b8e554215c19b55456194ec92516 100644
>--- a/Source/WebCore/Modules/credentialmanagement/NavigatorCredentials.h
>+++ b/Source/WebCore/Modules/credentialmanagement/NavigatorCredentials.h
>@@ -37,6 +37,7 @@ namespace WebCore {
> class Navigator;
> 
> class NavigatorCredentials final : public Supplement<Navigator> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     NavigatorCredentials();
>     virtual ~NavigatorCredentials();
>diff --git a/Source/WebCore/Modules/encryptedmedia/legacy/LegacyCDMPrivateClearKey.h b/Source/WebCore/Modules/encryptedmedia/legacy/LegacyCDMPrivateClearKey.h
>index 765f0641477b2c022164bdba107c779494662e23..876468ba4497ea5ba9ada3e1ebcc25b2139b97d4 100644
>--- a/Source/WebCore/Modules/encryptedmedia/legacy/LegacyCDMPrivateClearKey.h
>+++ b/Source/WebCore/Modules/encryptedmedia/legacy/LegacyCDMPrivateClearKey.h
>@@ -34,6 +34,7 @@ namespace WebCore {
> class LegacyCDM;
> 
> class LegacyCDMPrivateClearKey : public CDMPrivateInterface {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit LegacyCDMPrivateClearKey(LegacyCDM* cdm)
>         : m_cdm(cdm)
>diff --git a/Source/WebCore/Modules/gamepad/NavigatorGamepad.h b/Source/WebCore/Modules/gamepad/NavigatorGamepad.h
>index dee01e69cade1a485c0fea5b1e70eb87177c52a9..2ccdbff3059cc27f80a5daf144d932679415fa6f 100644
>--- a/Source/WebCore/Modules/gamepad/NavigatorGamepad.h
>+++ b/Source/WebCore/Modules/gamepad/NavigatorGamepad.h
>@@ -37,6 +37,7 @@ class Navigator;
> class PlatformGamepad;
> 
> class NavigatorGamepad : public Supplement<Navigator> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     NavigatorGamepad();
>     virtual ~NavigatorGamepad();
>diff --git a/Source/WebCore/Modules/indexeddb/IDBGetAllResult.h b/Source/WebCore/Modules/indexeddb/IDBGetAllResult.h
>index 3e96f90cdf5a20fee2e371a7ba55934af3abd22a..baf8043dabe518a829e0ac8cb5f60cf5af26b628 100644
>--- a/Source/WebCore/Modules/indexeddb/IDBGetAllResult.h
>+++ b/Source/WebCore/Modules/indexeddb/IDBGetAllResult.h
>@@ -36,6 +36,7 @@
> namespace WebCore {
> 
> class IDBGetAllResult {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     IDBGetAllResult()
>     {
>diff --git a/Source/WebCore/Modules/indexeddb/IDBGetResult.h b/Source/WebCore/Modules/indexeddb/IDBGetResult.h
>index 7ec7abc112f35078aa8933de18b803fdd41e1648..b49f9a6df3265a6bfcd3e8e9827865ef89476b32 100644
>--- a/Source/WebCore/Modules/indexeddb/IDBGetResult.h
>+++ b/Source/WebCore/Modules/indexeddb/IDBGetResult.h
>@@ -36,6 +36,7 @@
> namespace WebCore {
> 
> class IDBGetResult {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     IDBGetResult()
>         : m_isDefined(false)
>diff --git a/Source/WebCore/Modules/indexeddb/IDBKeyData.h b/Source/WebCore/Modules/indexeddb/IDBKeyData.h
>index d54491d90bcd7dd1291af2f70c9f5a4b904d9cf1..cda6bae45e0f96c984353f25aac496196b274642 100644
>--- a/Source/WebCore/Modules/indexeddb/IDBKeyData.h
>+++ b/Source/WebCore/Modules/indexeddb/IDBKeyData.h
>@@ -38,6 +38,7 @@ class KeyedDecoder;
> class KeyedEncoder;
> 
> class IDBKeyData {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     IDBKeyData()
>         : m_type(IndexedDB::KeyType::Invalid)
>diff --git a/Source/WebCore/Modules/indexeddb/IDBValue.h b/Source/WebCore/Modules/indexeddb/IDBValue.h
>index ae044cd67823ae42542594caa010013ba36bc82b..d6bf25e04db98774dfe40efa663ec816ef69482e 100644
>--- a/Source/WebCore/Modules/indexeddb/IDBValue.h
>+++ b/Source/WebCore/Modules/indexeddb/IDBValue.h
>@@ -36,6 +36,7 @@ namespace WebCore {
> class SerializedScriptValue;
> 
> class IDBValue {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT IDBValue();
>     IDBValue(const SerializedScriptValue&);
>diff --git a/Source/WebCore/Modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h b/Source/WebCore/Modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h
>index 20fe4654f4780540bdb7c2492b72541b2c7cf39c..e6b6fef2ef629c184a6dda2d37a63b0ff8622e91 100644
>--- a/Source/WebCore/Modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h
>+++ b/Source/WebCore/Modules/indexeddb/WorkerGlobalScopeIndexedDatabase.h
>@@ -41,6 +41,7 @@ class IDBConnectionProxy;
> }
> 
> class WorkerGlobalScopeIndexedDatabase : public Supplement<WorkerGlobalScope> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WorkerGlobalScopeIndexedDatabase(WorkerGlobalScope&, IDBClient::IDBConnectionProxy&);
>     virtual ~WorkerGlobalScopeIndexedDatabase();
>diff --git a/Source/WebCore/Modules/indexeddb/server/IndexValueEntry.h b/Source/WebCore/Modules/indexeddb/server/IndexValueEntry.h
>index ab350af2cb5771adfa97faac2acfc5fe841c6a5a..49abd92a5ca38b4d5f4a1bd20c2387b13afe9a8b 100644
>--- a/Source/WebCore/Modules/indexeddb/server/IndexValueEntry.h
>+++ b/Source/WebCore/Modules/indexeddb/server/IndexValueEntry.h
>@@ -38,6 +38,7 @@ enum class CursorDuplicity;
> namespace IDBServer {
> 
> class IndexValueEntry {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     IndexValueEntry(bool unique);
>     ~IndexValueEntry();
>diff --git a/Source/WebCore/Modules/indexeddb/server/IndexValueStore.h b/Source/WebCore/Modules/indexeddb/server/IndexValueStore.h
>index 86a1da56f530374130ab1375038b9c3c7ae436b5..df8cd0ad65311ad11784d49aa6267fd5f9f41390 100644
>--- a/Source/WebCore/Modules/indexeddb/server/IndexValueStore.h
>+++ b/Source/WebCore/Modules/indexeddb/server/IndexValueStore.h
>@@ -45,6 +45,7 @@ class MemoryIndex;
> typedef HashMap<IDBKeyData, std::unique_ptr<IndexValueEntry>, IDBKeyDataHash, IDBKeyDataHashTraits> IndexKeyValueMap;
> 
> class IndexValueStore {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     IndexValueStore(bool unique);
> 
>diff --git a/Source/WebCore/Modules/indexeddb/server/MemoryBackingStoreTransaction.h b/Source/WebCore/Modules/indexeddb/server/MemoryBackingStoreTransaction.h
>index 4ea2d3294a02f4f616c7e924e5c00ee62daed83c..df1a4e424f5a67c6bc13f390da29cd5116023826 100644
>--- a/Source/WebCore/Modules/indexeddb/server/MemoryBackingStoreTransaction.h
>+++ b/Source/WebCore/Modules/indexeddb/server/MemoryBackingStoreTransaction.h
>@@ -45,6 +45,7 @@ class MemoryObjectStore;
> typedef HashMap<IDBKeyData, ThreadSafeDataBuffer, IDBKeyDataHash, IDBKeyDataHashTraits> KeyValueMap;
> 
> class MemoryBackingStoreTransaction {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     static std::unique_ptr<MemoryBackingStoreTransaction> create(MemoryIDBBackingStore&, const IDBTransactionInfo&);
> 
>diff --git a/Source/WebCore/Modules/indexeddb/server/MemoryCursor.h b/Source/WebCore/Modules/indexeddb/server/MemoryCursor.h
>index 64ac3e82d40c382a21f249901fd8f9ff2c2cfb6f..5b0924fcd61ce1374f5de023aa046a8df70c74d0 100644
>--- a/Source/WebCore/Modules/indexeddb/server/MemoryCursor.h
>+++ b/Source/WebCore/Modules/indexeddb/server/MemoryCursor.h
>@@ -38,6 +38,7 @@ class IDBResourceIdentifier;
> namespace IDBServer {
> 
> class MemoryCursor {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~MemoryCursor();
> 
>diff --git a/Source/WebCore/Modules/indexeddb/server/MemoryIDBBackingStore.h b/Source/WebCore/Modules/indexeddb/server/MemoryIDBBackingStore.h
>index fca4988ed587d3fd39c355463832f1ef5b0f3f7e..7806730ddef32c9c9cd5ea590bd0fbc6318a1cad 100644
>--- a/Source/WebCore/Modules/indexeddb/server/MemoryIDBBackingStore.h
>+++ b/Source/WebCore/Modules/indexeddb/server/MemoryIDBBackingStore.h
>@@ -39,6 +39,7 @@ namespace IDBServer {
> class MemoryObjectStore;
> 
> class MemoryIDBBackingStore : public IDBBackingStore {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     static std::unique_ptr<MemoryIDBBackingStore> create(const IDBDatabaseIdentifier&);
>     
>diff --git a/Source/WebCore/Modules/indexeddb/server/SQLiteIDBBackingStore.h b/Source/WebCore/Modules/indexeddb/server/SQLiteIDBBackingStore.h
>index da67123902ec311317f687d2e01665a5a6284045..14004b309910ab5a20e6396f391ec3b48f04a1ef 100644
>--- a/Source/WebCore/Modules/indexeddb/server/SQLiteIDBBackingStore.h
>+++ b/Source/WebCore/Modules/indexeddb/server/SQLiteIDBBackingStore.h
>@@ -46,6 +46,7 @@ namespace IDBServer {
> class SQLiteIDBCursor;
> 
> class SQLiteIDBBackingStore : public IDBBackingStore {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     SQLiteIDBBackingStore(const IDBDatabaseIdentifier&, const String& databaseRootDirectory, IDBBackingStoreTemporaryFileHandler&, uint64_t quota);
>     
>diff --git a/Source/WebCore/Modules/indexeddb/server/SQLiteIDBCursor.h b/Source/WebCore/Modules/indexeddb/server/SQLiteIDBCursor.h
>index de89db87cedec8b6b01c56b38f4f9541a42fff43..f78ee76591f13275fa4afa943e96918925d851fe 100644
>--- a/Source/WebCore/Modules/indexeddb/server/SQLiteIDBCursor.h
>+++ b/Source/WebCore/Modules/indexeddb/server/SQLiteIDBCursor.h
>@@ -49,6 +49,7 @@ enum class ShouldFetchForSameKey : bool { No, Yes };
> class SQLiteIDBTransaction;
> 
> class SQLiteIDBCursor {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(SQLiteIDBCursor);
> public:
>     static std::unique_ptr<SQLiteIDBCursor> maybeCreate(SQLiteIDBTransaction&, const IDBCursorInfo&);
>diff --git a/Source/WebCore/Modules/indexeddb/server/SQLiteIDBTransaction.h b/Source/WebCore/Modules/indexeddb/server/SQLiteIDBTransaction.h
>index a2753d6c756d06a02d23a3c49ce20bafe94c3171..5c8fbec4e94a01ef557837bb1b7b8d3b614bbb21 100644
>--- a/Source/WebCore/Modules/indexeddb/server/SQLiteIDBTransaction.h
>+++ b/Source/WebCore/Modules/indexeddb/server/SQLiteIDBTransaction.h
>@@ -48,6 +48,7 @@ class SQLiteIDBBackingStore;
> class SQLiteIDBCursor;
> 
> class SQLiteIDBTransaction {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(SQLiteIDBTransaction);
> public:
>     SQLiteIDBTransaction(SQLiteIDBBackingStore&, const IDBTransactionInfo&);
>diff --git a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h
>index d46dfa903cfb35ed7c3538e21c3e2d6c4ab87480..5e193a231881fa1c5edf9c8bdffdc094c2b584ae 100644
>--- a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h
>+++ b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h
>@@ -73,6 +73,7 @@ typedef Function<void(const IDBError&, const IDBGetAllResult&)> GetAllResultsCal
> typedef Function<void(const IDBError&, uint64_t)> CountCallback;
> 
> class UniqueIDBDatabase : public CanMakeWeakPtr<UniqueIDBDatabase> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     UniqueIDBDatabase(IDBServer&, const IDBDatabaseIdentifier&);
>     UniqueIDBDatabase(UniqueIDBDatabase&) = delete;
>diff --git a/Source/WebCore/Modules/indexeddb/shared/IDBDatabaseInfo.h b/Source/WebCore/Modules/indexeddb/shared/IDBDatabaseInfo.h
>index 53df05a4f8433cf4b0860a14e335ca5ee9c9e023..417284a6ab29b858bba182d3b632e54e3ab1efa3 100644
>--- a/Source/WebCore/Modules/indexeddb/shared/IDBDatabaseInfo.h
>+++ b/Source/WebCore/Modules/indexeddb/shared/IDBDatabaseInfo.h
>@@ -33,6 +33,7 @@
> namespace WebCore {
> 
> class IDBDatabaseInfo {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     IDBDatabaseInfo(const String& name, uint64_t version);
> 
>diff --git a/Source/WebCore/Modules/indexeddb/shared/IDBResourceIdentifier.h b/Source/WebCore/Modules/indexeddb/shared/IDBResourceIdentifier.h
>index 91d7810ccbaf0aeb4c009afeae31b11ed6f40d9a..d0dffa00503fb0378d7e74f55cae575ac11259fd 100644
>--- a/Source/WebCore/Modules/indexeddb/shared/IDBResourceIdentifier.h
>+++ b/Source/WebCore/Modules/indexeddb/shared/IDBResourceIdentifier.h
>@@ -42,6 +42,7 @@ class IDBConnectionToClient;
> }
> 
> class IDBResourceIdentifier {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit IDBResourceIdentifier(const IDBClient::IDBConnectionProxy&);
>     IDBResourceIdentifier(const IDBClient::IDBConnectionProxy&, const IDBRequest&);
>diff --git a/Source/WebCore/Modules/indexeddb/shared/IDBTransactionInfo.h b/Source/WebCore/Modules/indexeddb/shared/IDBTransactionInfo.h
>index 636286c86dfd9cff4a93eaaa0729e18382272a48..cc25d59ebf83d37adc0254fac401856025db1147 100644
>--- a/Source/WebCore/Modules/indexeddb/shared/IDBTransactionInfo.h
>+++ b/Source/WebCore/Modules/indexeddb/shared/IDBTransactionInfo.h
>@@ -44,6 +44,7 @@ class IDBConnectionToClient;
> }
> 
> class IDBTransactionInfo {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     static IDBTransactionInfo clientTransaction(const IDBClient::IDBConnectionProxy&, const Vector<String>& objectStores, IDBTransactionMode);
>     static IDBTransactionInfo versionChange(const IDBServer::IDBConnectionToClient&, const IDBDatabaseInfo& originalDatabaseInfo, uint64_t newVersion);
>diff --git a/Source/WebCore/Modules/mediacapabilities/NavigatorMediaCapabilities.h b/Source/WebCore/Modules/mediacapabilities/NavigatorMediaCapabilities.h
>index 73b4c3e7224c5bba6c36d859c280804a53245898..2d964ad2cd51ab99622e6ebdc2745a9b916b2f98 100644
>--- a/Source/WebCore/Modules/mediacapabilities/NavigatorMediaCapabilities.h
>+++ b/Source/WebCore/Modules/mediacapabilities/NavigatorMediaCapabilities.h
>@@ -33,6 +33,7 @@ class MediaCapabilities;
> class Navigator;
> 
> class NavigatorMediaCapabilities final : public Supplement<Navigator> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     NavigatorMediaCapabilities();
>     ~NavigatorMediaCapabilities();
>diff --git a/Source/WebCore/Modules/mediasession/WebMediaSessionManager.cpp b/Source/WebCore/Modules/mediasession/WebMediaSessionManager.cpp
>index bc20c6b3a72fc87b428950c904478935e7c4eacc..50d0bb0b1ed53a432458d9fb713570ae0eca0d06 100644
>--- a/Source/WebCore/Modules/mediasession/WebMediaSessionManager.cpp
>+++ b/Source/WebCore/Modules/mediasession/WebMediaSessionManager.cpp
>@@ -39,6 +39,8 @@ namespace WebCore {
> static const Seconds taskDelayInterval { 100_ms };
> 
> struct ClientState {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     explicit ClientState(WebMediaSessionManagerClient& client, uint64_t contextId)
>         : client(client)
>         , contextId(contextId)
>diff --git a/Source/WebCore/Modules/mediastream/NavigatorMediaDevices.h b/Source/WebCore/Modules/mediastream/NavigatorMediaDevices.h
>index 093e74cc2f001d00691a6859a9bf425d8ad94892..9883cb588ac0548a32f57208a21e297ef33f545e 100644
>--- a/Source/WebCore/Modules/mediastream/NavigatorMediaDevices.h
>+++ b/Source/WebCore/Modules/mediastream/NavigatorMediaDevices.h
>@@ -41,6 +41,7 @@ class MediaDevices;
> class Navigator;
> 
> class NavigatorMediaDevices : public Supplement<Navigator>, public DOMWindowProperty {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit NavigatorMediaDevices(DOMWindow*);
>     virtual ~NavigatorMediaDevices();
>diff --git a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.h b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.h
>index e8010196d6e99a06502b5644ae50f45afebcd5ce..44f702320d29ec17fb2b7046756220680400dfe6 100644
>--- a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.h
>+++ b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCDataChannelHandler.h
>@@ -47,6 +47,7 @@ struct RTCDataChannelInit;
> class ScriptExecutionContext;
> 
> class LibWebRTCDataChannelHandler final : public RTCDataChannelHandler, private webrtc::DataChannelObserver {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit LibWebRTCDataChannelHandler(rtc::scoped_refptr<webrtc::DataChannelInterface>&& channel) : m_channel(WTFMove(channel)) { ASSERT(m_channel); }
>     ~LibWebRTCDataChannelHandler();
>diff --git a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpReceiverBackend.h b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpReceiverBackend.h
>index 3124323d346f1053b3f714dcffad429d00ab4e5e..4b360dabee00d7b6163ed377b9ddc41ed28e3aed 100644
>--- a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpReceiverBackend.h
>+++ b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpReceiverBackend.h
>@@ -39,6 +39,7 @@ ALLOW_UNUSED_PARAMETERS_END
> namespace WebCore {
> 
> class LibWebRTCRtpReceiverBackend final : public RTCRtpReceiverBackend {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit LibWebRTCRtpReceiverBackend(rtc::scoped_refptr<webrtc::RtpReceiverInterface>&& rtcReceiver)
>         : m_rtcReceiver(WTFMove(rtcReceiver))
>diff --git a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpSenderBackend.h b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpSenderBackend.h
>index ccd28a0d343169d117df159a4e59429305bb74dd..b069cf1e329826e6aac3d19e502e63fa2e34d89e 100644
>--- a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpSenderBackend.h
>+++ b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpSenderBackend.h
>@@ -45,6 +45,7 @@ namespace WebCore {
> class LibWebRTCPeerConnectionBackend;
> 
> class LibWebRTCRtpSenderBackend final : public RTCRtpSenderBackend {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     LibWebRTCRtpSenderBackend(LibWebRTCPeerConnectionBackend& backend, rtc::scoped_refptr<webrtc::RtpSenderInterface>&& rtcSender)
>         : m_peerConnectionBackend(makeWeakPtr(&backend))
>diff --git a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpTransceiverBackend.h b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpTransceiverBackend.h
>index 5ad569e4e238a6600f3d9a19ac21e741fa2ef33a..5d2b32595df3ee24c569bbc074522a78f25f6088 100644
>--- a/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpTransceiverBackend.h
>+++ b/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCRtpTransceiverBackend.h
>@@ -42,6 +42,7 @@ namespace WebCore {
> class LibWebRTCRtpReceiverBackend;
> 
> class LibWebRTCRtpTransceiverBackend final : public RTCRtpTransceiverBackend {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit LibWebRTCRtpTransceiverBackend(rtc::scoped_refptr<webrtc::RtpTransceiverInterface>&& rtcTransceiver)
>         : m_rtcTransceiver(WTFMove(rtcTransceiver))
>diff --git a/Source/WebCore/Modules/navigatorcontentutils/NavigatorContentUtils.h b/Source/WebCore/Modules/navigatorcontentutils/NavigatorContentUtils.h
>index bf26477519a5f4964ef9e1454744e5d33b60f778..59caba5d47e44281c5601ba85f7d950e73b90867 100644
>--- a/Source/WebCore/Modules/navigatorcontentutils/NavigatorContentUtils.h
>+++ b/Source/WebCore/Modules/navigatorcontentutils/NavigatorContentUtils.h
>@@ -40,6 +40,7 @@ class Navigator;
> typedef int ExceptionCode;
> 
> class NavigatorContentUtils final : public Supplement<Page> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit NavigatorContentUtils(std::unique_ptr<NavigatorContentUtilsClient> client)
>         : m_client(WTFMove(client))
>diff --git a/Source/WebCore/Modules/quota/DOMWindowQuota.h b/Source/WebCore/Modules/quota/DOMWindowQuota.h
>index 62d0812db7daa7a3ab7630443dffd0590075976c..fa9c745b8a2fba0f12682329d3cd311aa0911c24 100644
>--- a/Source/WebCore/Modules/quota/DOMWindowQuota.h
>+++ b/Source/WebCore/Modules/quota/DOMWindowQuota.h
>@@ -41,6 +41,7 @@ class DOMWindow;
> class StorageInfo;
> 
> class DOMWindowQuota : public Supplement<DOMWindow>, public DOMWindowProperty {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DOMWindowQuota(DOMWindow*);
>     virtual ~DOMWindowQuota();
>diff --git a/Source/WebCore/Modules/quota/NavigatorStorageQuota.h b/Source/WebCore/Modules/quota/NavigatorStorageQuota.h
>index f88ac7f6cdc43d23f8e286c4163b96d0f39a4cde..486471c261a25613480f3d6d1a5d4c087002768f 100644
>--- a/Source/WebCore/Modules/quota/NavigatorStorageQuota.h
>+++ b/Source/WebCore/Modules/quota/NavigatorStorageQuota.h
>@@ -41,6 +41,7 @@ class StorageQuota;
> class Navigator;
> 
> class NavigatorStorageQuota : public Supplement<Navigator>, public DOMWindowProperty {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit NavigatorStorageQuota(DOMWindow*);
>     virtual ~NavigatorStorageQuota();
>diff --git a/Source/WebCore/Modules/quota/WorkerNavigatorStorageQuota.h b/Source/WebCore/Modules/quota/WorkerNavigatorStorageQuota.h
>index 16fde027ce05423e16cbbd8290c80bceab6099f4..1cb8c84198cbe07e50f5015ce8490a00dfff88da 100644
>--- a/Source/WebCore/Modules/quota/WorkerNavigatorStorageQuota.h
>+++ b/Source/WebCore/Modules/quota/WorkerNavigatorStorageQuota.h
>@@ -41,6 +41,7 @@ class StorageQuota;
> class WorkerNavigator;
> 
> class WorkerNavigatorStorageQuota : public Supplement<WorkerNavigator> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WorkerNavigatorStorageQuota();
>     virtual ~WorkerNavigatorStorageQuota();
>diff --git a/Source/WebCore/Modules/speech/DOMWindowSpeechSynthesis.h b/Source/WebCore/Modules/speech/DOMWindowSpeechSynthesis.h
>index a381093fdc2dc6ccb15fdaf2dffa5a46e69f9506..9ab74408571bea2591f6f100a6bca9c8a63a8aab 100644
>--- a/Source/WebCore/Modules/speech/DOMWindowSpeechSynthesis.h
>+++ b/Source/WebCore/Modules/speech/DOMWindowSpeechSynthesis.h
>@@ -36,6 +36,7 @@ namespace WebCore {
> class DOMWindow;
> 
> class DOMWindowSpeechSynthesis : public Supplement<DOMWindow>, public DOMWindowProperty {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DOMWindowSpeechSynthesis(DOMWindow*);
>     virtual ~DOMWindowSpeechSynthesis();
>diff --git a/Source/WebCore/Modules/webaudio/BiquadProcessor.h b/Source/WebCore/Modules/webaudio/BiquadProcessor.h
>index 32abef863d12b7a5cd3452e200bf69fd3da15b06..adbeec43025af03af17e1151abbeffeeee77f632 100644
>--- a/Source/WebCore/Modules/webaudio/BiquadProcessor.h
>+++ b/Source/WebCore/Modules/webaudio/BiquadProcessor.h
>@@ -48,6 +48,7 @@ enum class BiquadFilterType {
> };
> 
> class BiquadProcessor final : public AudioDSPKernelProcessor {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     BiquadProcessor(AudioContext&, float sampleRate, size_t numberOfChannels, bool autoInitialize);
> 
>diff --git a/Source/WebCore/Modules/webaudio/DelayProcessor.h b/Source/WebCore/Modules/webaudio/DelayProcessor.h
>index 3d9c17d28b182b20551b9e09e4a92cdf6d5a622b..85d9cc6d7fde16cefd78d4794210ddd08234df3f 100644
>--- a/Source/WebCore/Modules/webaudio/DelayProcessor.h
>+++ b/Source/WebCore/Modules/webaudio/DelayProcessor.h
>@@ -34,6 +34,7 @@ namespace WebCore {
> class AudioDSPKernel;
>     
> class DelayProcessor final : public AudioDSPKernelProcessor {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     DelayProcessor(AudioContext&, float sampleRate, unsigned numberOfChannels, double maxDelayTime);
>     virtual ~DelayProcessor();
>diff --git a/Source/WebCore/Modules/webauthn/fido/FidoHidPacket.h b/Source/WebCore/Modules/webauthn/fido/FidoHidPacket.h
>index 18fcadece964d2ceef0e8206a6dd203e8355dc4f..217d83b1975aabcc83cdc9d76b20eaf84d547a7d 100644
>--- a/Source/WebCore/Modules/webauthn/fido/FidoHidPacket.h
>+++ b/Source/WebCore/Modules/webauthn/fido/FidoHidPacket.h
>@@ -44,6 +44,7 @@ namespace fido {
> // FidoHidInitPacket cannot store the entire payload, further payload
> // information is stored in HidContinuationPackets.
> class WEBCORE_EXPORT FidoHidPacket {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(FidoHidPacket);
> public:
>     FidoHidPacket(Vector<uint8_t>&& data, uint32_t channelId);
>diff --git a/Source/WebCore/Modules/webdriver/NavigatorWebDriver.h b/Source/WebCore/Modules/webdriver/NavigatorWebDriver.h
>index d66271f121fa66fc5872dfa21ea9037fa0ca6738..7994ce8542e361124654f1d78a6c515be7e00280 100644
>--- a/Source/WebCore/Modules/webdriver/NavigatorWebDriver.h
>+++ b/Source/WebCore/Modules/webdriver/NavigatorWebDriver.h
>@@ -32,6 +32,7 @@ namespace WebCore {
> class Navigator;
> 
> class NavigatorWebDriver final : public Supplement<Navigator> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     NavigatorWebDriver();
>     virtual ~NavigatorWebDriver();
>diff --git a/Source/WebCore/Modules/webgpu/DOMWindowWebGPU.h b/Source/WebCore/Modules/webgpu/DOMWindowWebGPU.h
>index 8eec430f66c582a95d68ae3d2468e4978328acb1..f1bd2d00124eeae6529a569a45785de51bbaf247 100644
>--- a/Source/WebCore/Modules/webgpu/DOMWindowWebGPU.h
>+++ b/Source/WebCore/Modules/webgpu/DOMWindowWebGPU.h
>@@ -36,6 +36,7 @@ class DOMWindow;
> class WebGPU;
> 
> class DOMWindowWebGPU : public Supplement<DOMWindow>, public DOMWindowProperty {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DOMWindowWebGPU(DOMWindow*);
>     virtual ~DOMWindowWebGPU() = default;
>diff --git a/Source/WebCore/Modules/websockets/WebSocketChannel.h b/Source/WebCore/Modules/websockets/WebSocketChannel.h
>index 1131ea611f9523a720fc5404253cd709c0b82a0d..68ce533463790b05696e7d660a6ccfefcba94dd1 100644
>--- a/Source/WebCore/Modules/websockets/WebSocketChannel.h
>+++ b/Source/WebCore/Modules/websockets/WebSocketChannel.h
>@@ -153,6 +153,8 @@ private:
>         QueuedFrameTypeBlob
>     };
>     struct QueuedFrame {
>+        WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>         WebSocketFrame::OpCode opCode;
>         QueuedFrameType frameType;
>         // Only one of the following items is used, according to the value of frameType.
>diff --git a/Source/WebCore/Modules/webvr/NavigatorWebVR.h b/Source/WebCore/Modules/webvr/NavigatorWebVR.h
>index be059b8c36f711b85b97a8c21c6bcfa182f482b1..5610ba1e82466e54e05acc7a0515e65c5f8efd9f 100644
>--- a/Source/WebCore/Modules/webvr/NavigatorWebVR.h
>+++ b/Source/WebCore/Modules/webvr/NavigatorWebVR.h
>@@ -37,6 +37,7 @@ class Page;
> class VRDisplay;
> 
> class NavigatorWebVR final : public Supplement<Navigator> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     using GetVRDisplaysPromise = DOMPromiseDeferred<IDLSequence<IDLInterface<VRDisplay>>>;
> 
>diff --git a/Source/WebCore/PAL/pal/crypto/openssl/CryptoDigestOpenSSL.cpp b/Source/WebCore/PAL/pal/crypto/openssl/CryptoDigestOpenSSL.cpp
>index 43ecf56c2e4a7e18b527bd6cc1c06d8b89720f7e..bc23d59cc31237b1497a76acc59d3eaf5d2b5840 100644
>--- a/Source/WebCore/PAL/pal/crypto/openssl/CryptoDigestOpenSSL.cpp
>+++ b/Source/WebCore/PAL/pal/crypto/openssl/CryptoDigestOpenSSL.cpp
>@@ -75,6 +75,8 @@ struct CryptoDigestContext {
> 
> template <typename SHAContext, typename SHAFunctions>
> struct CryptoDigestContextImpl : public CryptoDigestContext {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     static std::unique_ptr<CryptoDigestContext> create()
>     {
>         return std::make_unique<CryptoDigestContextImpl>();
>diff --git a/Source/WebCore/PAL/pal/system/Clock.h b/Source/WebCore/PAL/pal/system/Clock.h
>index 84a95bf0985d86b6471c1b24f24e99570f7e8fec..50860adc79355155e30273dcfbfbbcbf2cacc9e5 100644
>--- a/Source/WebCore/PAL/pal/system/Clock.h
>+++ b/Source/WebCore/PAL/pal/system/Clock.h
>@@ -31,6 +31,7 @@
> namespace PAL {
> 
> class Clock {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     static std::unique_ptr<Clock> create();
>     virtual ~Clock() = default;
>diff --git a/Source/WebCore/accessibility/AXObjectCache.h b/Source/WebCore/accessibility/AXObjectCache.h
>index cf0a1836f8748965f6eb71f2b840b7a2124e2527..d6e7eff8db98e9159a7f1ddb89e8b3b1ef2a4648 100644
>--- a/Source/WebCore/accessibility/AXObjectCache.h
>+++ b/Source/WebCore/accessibility/AXObjectCache.h
>@@ -91,6 +91,7 @@ struct CharacterOffset {
> };
> 
> class AXComputedObjectAttributeCache {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     AccessibilityObjectInclusion getIgnored(AXID) const;
>     void setIgnored(AXID, AccessibilityObjectInclusion);
>diff --git a/Source/WebCore/bindings/js/DOMGCOutputConstraint.h b/Source/WebCore/bindings/js/DOMGCOutputConstraint.h
>index f03c4fc5292a77bfbf0eeb6362d8f22eea276fb5..caec0d0a66f01f006b6e12ea31ccc49795278d8e 100644
>--- a/Source/WebCore/bindings/js/DOMGCOutputConstraint.h
>+++ b/Source/WebCore/bindings/js/DOMGCOutputConstraint.h
>@@ -34,6 +34,7 @@ namespace WebCore {
> class JSVMClientData;
> 
> class DOMGCOutputConstraint : public JSC::MarkingConstraint {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     DOMGCOutputConstraint(JSC::VM&, JSVMClientData&);
>     ~DOMGCOutputConstraint();
>diff --git a/Source/WebCore/bindings/js/DOMPromiseProxy.h b/Source/WebCore/bindings/js/DOMPromiseProxy.h
>index 48ac3f950becb54a07d04fa7c53501d96608150c..7da46a61504ef24815a694dfba12c28b1ef4fe66 100644
>--- a/Source/WebCore/bindings/js/DOMPromiseProxy.h
>+++ b/Source/WebCore/bindings/js/DOMPromiseProxy.h
>@@ -36,6 +36,7 @@ namespace WebCore {
> 
> template<typename IDLType>
> class DOMPromiseProxy {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     using Value = typename IDLType::StorageType;
> 
>diff --git a/Source/WebCore/bridge/c/c_runtime.h b/Source/WebCore/bridge/c/c_runtime.h
>index 219fefee431fd4be7312696e99405ad886e4da23..7e8979b2b125b2ffa3ad302b6f2058aaf92a2c6e 100644
>--- a/Source/WebCore/bridge/c/c_runtime.h
>+++ b/Source/WebCore/bridge/c/c_runtime.h
>@@ -48,8 +48,7 @@ private:
> };
> 
> 
>-class CMethod : public Method
>-{
>+class CMethod : public Method {
> public:
>     CMethod(NPIdentifier ident) : _methodIdentifier(ident) { }
> 
>diff --git a/Source/WebCore/contentextensions/CombinedURLFilters.cpp b/Source/WebCore/contentextensions/CombinedURLFilters.cpp
>index 7558b22765df382ab58b1cd903fd3646ffb8e4a8..83d44e067fbdf547f6c88b67a36eb53f691466ee 100644
>--- a/Source/WebCore/contentextensions/CombinedURLFilters.cpp
>+++ b/Source/WebCore/contentextensions/CombinedURLFilters.cpp
>@@ -46,6 +46,8 @@ struct PrefixTreeEdge {
> typedef Vector<PrefixTreeEdge, 0, WTF::CrashOnOverflow, 1> PrefixTreeEdges;
> 
> struct PrefixTreeVertex {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     PrefixTreeEdges edges;
> };
> 
>diff --git a/Source/WebCore/crypto/CryptoAlgorithmParameters.h b/Source/WebCore/crypto/CryptoAlgorithmParameters.h
>index 41d3f61688bc06ee35b194cfad3448f321e28672..8398404b8e33ea6e3df7f6cf3e203f55cd727677 100644
>--- a/Source/WebCore/crypto/CryptoAlgorithmParameters.h
>+++ b/Source/WebCore/crypto/CryptoAlgorithmParameters.h
>@@ -34,6 +34,7 @@
> namespace WebCore {
> 
> class CryptoAlgorithmParameters {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum class Class {
>         None,
>diff --git a/Source/WebCore/css/CSSComputedStyleDeclaration.h b/Source/WebCore/css/CSSComputedStyleDeclaration.h
>index 6bfc647deedbab90d952b65223ec203cef35996c..1cf7a02428717f3af23f63008c7c0d917bfffe04 100644
>--- a/Source/WebCore/css/CSSComputedStyleDeclaration.h
>+++ b/Source/WebCore/css/CSSComputedStyleDeclaration.h
>@@ -50,6 +50,7 @@ enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };
> enum AdjustPixelValuesForComputedStyle { AdjustPixelValues, DoNotAdjustPixelValues };
> 
> class ComputedStyleExtractor {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     ComputedStyleExtractor(Node*, bool allowVisitedStyle = false, PseudoId = PseudoId::None);
>     ComputedStyleExtractor(Element*, bool allowVisitedStyle = false, PseudoId = PseudoId::None);
>diff --git a/Source/WebCore/css/CSSRegisteredCustomProperty.h b/Source/WebCore/css/CSSRegisteredCustomProperty.h
>index dfcf0bdc39ed540c3d1daa4c05a64c0f5915392b..217f149adf0e0e94910ac6badbf1d2ca146d0043 100644
>--- a/Source/WebCore/css/CSSRegisteredCustomProperty.h
>+++ b/Source/WebCore/css/CSSRegisteredCustomProperty.h
>@@ -32,6 +32,8 @@ namespace WebCore {
> class CSSCustomPropertyValue;
> 
> struct CSSRegisteredCustomProperty {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     const String name;
>     const String syntax;
>     const bool inherits;
>diff --git a/Source/WebCore/css/DOMCSSPaintWorklet.h b/Source/WebCore/css/DOMCSSPaintWorklet.h
>index a2cb373f6a03413d121b401434bfd9ef99a976f2..f865ec4452023e49486df73a4f0933375aaf5c07 100644
>--- a/Source/WebCore/css/DOMCSSPaintWorklet.h
>+++ b/Source/WebCore/css/DOMCSSPaintWorklet.h
>@@ -39,6 +39,7 @@ class Worklet;
> class DOMCSSNamespace;
> 
> class DOMCSSPaintWorklet final : public Supplement<DOMCSSNamespace> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DOMCSSPaintWorklet(DOMCSSNamespace&) { }
> 
>diff --git a/Source/WebCore/css/DOMCSSRegisterCustomProperty.h b/Source/WebCore/css/DOMCSSRegisterCustomProperty.h
>index ee9988ae0325fc8e935af238b31f697759f43239..8641656e273cb9159a4f5736dc4aa68ea85037ab 100644
>--- a/Source/WebCore/css/DOMCSSRegisterCustomProperty.h
>+++ b/Source/WebCore/css/DOMCSSRegisterCustomProperty.h
>@@ -35,6 +35,7 @@ class Document;
> class DOMCSSNamespace;
> 
> class DOMCSSRegisterCustomProperty final : public Supplement<DOMCSSNamespace> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DOMCSSRegisterCustomProperty(DOMCSSNamespace&) { }
> 
>diff --git a/Source/WebCore/css/StyleRule.h b/Source/WebCore/css/StyleRule.h
>index 718052313844032f75c9c6cd1e5aa93dbedd42af..401d04942c31e13108b0bde8544541cca8feec08 100644
>--- a/Source/WebCore/css/StyleRule.h
>+++ b/Source/WebCore/css/StyleRule.h
>@@ -220,6 +220,7 @@ private:
> };
> 
> class DeferredStyleGroupRuleList final {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     DeferredStyleGroupRuleList(const CSSParserTokenRange&, CSSDeferredParser&);
>     
>diff --git a/Source/WebCore/dom/ConstantPropertyMap.h b/Source/WebCore/dom/ConstantPropertyMap.h
>index befc896fff57dcb6ea0f90a973ffe0f151d168c5..d26fb988b018cde63b44f2a1a757177919ab4697 100644
>--- a/Source/WebCore/dom/ConstantPropertyMap.h
>+++ b/Source/WebCore/dom/ConstantPropertyMap.h
>@@ -51,6 +51,7 @@ enum class ConstantProperty {
> };
> 
> class ConstantPropertyMap {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit ConstantPropertyMap(Document&);
> 
>diff --git a/Source/WebCore/dom/CustomElementReactionQueue.h b/Source/WebCore/dom/CustomElementReactionQueue.h
>index a7f8002aa8cc2d38139aacd9e33c3887a495d774..c82c60704db459ccb7713eb8aaa80a4e9ad4387a 100644
>--- a/Source/WebCore/dom/CustomElementReactionQueue.h
>+++ b/Source/WebCore/dom/CustomElementReactionQueue.h
>@@ -45,6 +45,7 @@ class JSCustomElementInterface;
> class QualifiedName;
> 
> class CustomElementReactionQueue {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(CustomElementReactionQueue);
> public:
>     CustomElementReactionQueue(JSCustomElementInterface&);
>diff --git a/Source/WebCore/dom/Document.h b/Source/WebCore/dom/Document.h
>index 18fefe50a93b913ee03e9c2c5eb23ddebda6a721..4ca220e21dd8b1060fb7f2c5819dc43c9546093d 100644
>--- a/Source/WebCore/dom/Document.h
>+++ b/Source/WebCore/dom/Document.h
>@@ -332,6 +332,7 @@ using RenderingContext = Variant<
> >;
> 
> class DocumentParserYieldToken {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT DocumentParserYieldToken(Document&);
>     WEBCORE_EXPORT ~DocumentParserYieldToken();
>diff --git a/Source/WebCore/dom/GenericEventQueue.h b/Source/WebCore/dom/GenericEventQueue.h
>index db3b4557c3fc338a634361428bb81a02eefef228..e498cfa377adf156c375741e86b51bf1398dca6e 100644
>--- a/Source/WebCore/dom/GenericEventQueue.h
>+++ b/Source/WebCore/dom/GenericEventQueue.h
>@@ -37,6 +37,7 @@ class EventTarget;
> class Timer;
> 
> class GenericEventQueue {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit GenericEventQueue(EventTarget&);
>     ~GenericEventQueue();
>diff --git a/Source/WebCore/dom/RejectedPromiseTracker.h b/Source/WebCore/dom/RejectedPromiseTracker.h
>index 31a4556ce4bccc503b86dbb7eaffb575be82a061..87fd556bfc585b97820214cc944adab0c1db04e4 100644
>--- a/Source/WebCore/dom/RejectedPromiseTracker.h
>+++ b/Source/WebCore/dom/RejectedPromiseTracker.h
>@@ -44,6 +44,7 @@ class ScriptExecutionContext;
> class UnhandledPromise;
> 
> class RejectedPromiseTracker {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(RejectedPromiseTracker);
> public:
>     explicit RejectedPromiseTracker(ScriptExecutionContext&, JSC::VM&);
>diff --git a/Source/WebCore/dom/UserGestureIndicator.h b/Source/WebCore/dom/UserGestureIndicator.h
>index 5a1cb9ea8a293a9f26710c869318258e04d7ee03..c18cdc0c6cedc1b8281a7b0d742105065381f4fc 100644
>--- a/Source/WebCore/dom/UserGestureIndicator.h
>+++ b/Source/WebCore/dom/UserGestureIndicator.h
>@@ -76,6 +76,7 @@ private:
> };
> 
> class UserGestureIndicator {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(UserGestureIndicator);
> public:
>     WEBCORE_EXPORT static RefPtr<UserGestureToken> currentUserGesture();
>diff --git a/Source/WebCore/editing/ReplaceSelectionCommand.cpp b/Source/WebCore/editing/ReplaceSelectionCommand.cpp
>index 47d60dbbc22a3b38f2e76d945f467156b49aac41..7311b2a2a5de24008e22783095613d6fe6cf0630 100644
>--- a/Source/WebCore/editing/ReplaceSelectionCommand.cpp
>+++ b/Source/WebCore/editing/ReplaceSelectionCommand.cpp
>@@ -75,6 +75,7 @@ static void removeHeadContents(ReplacementFragment&);
> // --- ReplacementFragment helper class
> 
> class ReplacementFragment {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(ReplacementFragment);
> public:
>     ReplacementFragment(Document&, DocumentFragment*, const VisibleSelection&);
>diff --git a/Source/WebCore/editing/SelectionRectGatherer.h b/Source/WebCore/editing/SelectionRectGatherer.h
>index 047cf16f05b86d5da74285c06081c84855eae79a..b85ba245681f19cad78861d187109f6018eb6b8a 100644
>--- a/Source/WebCore/editing/SelectionRectGatherer.h
>+++ b/Source/WebCore/editing/SelectionRectGatherer.h
>@@ -50,6 +50,7 @@ public:
>     bool isTextOnly() const { return m_isTextOnly; }
> 
>     class Notifier {
>+        WTF_MAKE_FAST_ALLOCATED;
>         WTF_MAKE_NONCOPYABLE(Notifier);
>     public:
>         Notifier(SelectionRectGatherer&);
>diff --git a/Source/WebCore/editing/TextIterator.h b/Source/WebCore/editing/TextIterator.h
>index c279ae5ab05fbd7fb0b4e0e6b64cfa8005165969..2601274cc6ecec4e5aeed19606f719480752db1e 100644
>--- a/Source/WebCore/editing/TextIterator.h
>+++ b/Source/WebCore/editing/TextIterator.h
>@@ -100,6 +100,7 @@ private:
> // the chunks it's already stored in, to avoid copying any text.
> 
> class TextIterator {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit TextIterator(Position start, Position end, TextIteratorBehavior = TextIteratorDefaultBehavior);
>     WEBCORE_EXPORT explicit TextIterator(const Range*, TextIteratorBehavior = TextIteratorDefaultBehavior);
>diff --git a/Source/WebCore/editing/cocoa/HTMLConverter.mm b/Source/WebCore/editing/cocoa/HTMLConverter.mm
>index c86fd738c2810e97c882f2f44a7b6d74d2161f44..ead5dca266887ec1e42142ed41078ffe44f3ff82 100644
>--- a/Source/WebCore/editing/cocoa/HTMLConverter.mm
>+++ b/Source/WebCore/editing/cocoa/HTMLConverter.mm
>@@ -239,6 +239,7 @@ static const CGFloat defaultFontSize = 12;
> static const CGFloat minimumFontSize = 1;
> 
> class HTMLConverterCaches {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     String propertyValueForNode(Node&, CSSPropertyID );
>     bool floatPropertyValueForNode(Node&, CSSPropertyID, float&);
>diff --git a/Source/WebCore/fileapi/AsyncFileStream.cpp b/Source/WebCore/fileapi/AsyncFileStream.cpp
>index 9c9eccb77a328589a23320ac8dfc72dd8a39b373..a095eeae9b2a797bdabae34940fdc6a3ce30424b 100644
>--- a/Source/WebCore/fileapi/AsyncFileStream.cpp
>+++ b/Source/WebCore/fileapi/AsyncFileStream.cpp
>@@ -46,6 +46,8 @@
> namespace WebCore {
> 
> struct AsyncFileStream::Internals {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     explicit Internals(FileStreamClient&);
> 
>     FileStream stream;
>diff --git a/Source/WebCore/fileapi/AsyncFileStream.h b/Source/WebCore/fileapi/AsyncFileStream.h
>index 9c1bb8f385c441c36645b2dededd78f0fe469b6d..84a241a263bc3812e4bef7798bdfd24cf2f2071b 100644
>--- a/Source/WebCore/fileapi/AsyncFileStream.h
>+++ b/Source/WebCore/fileapi/AsyncFileStream.h
>@@ -41,6 +41,7 @@ class FileStreamClient;
> class FileStream;
> 
> class WEBCORE_EXPORT AsyncFileStream {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit AsyncFileStream(FileStreamClient&);
>     ~AsyncFileStream();
>diff --git a/Source/WebCore/html/forms/FileIconLoader.h b/Source/WebCore/html/forms/FileIconLoader.h
>index c1ad3ea6e3930a104fc1385edbf0cc5f696c87a1..94f0acfaf2629b183b983b9d1c5dbf76f6e84795 100644
>--- a/Source/WebCore/html/forms/FileIconLoader.h
>+++ b/Source/WebCore/html/forms/FileIconLoader.h
>@@ -43,6 +43,7 @@ public:
> };
> 
> class FileIconLoader {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit FileIconLoader(FileIconLoaderClient&);
> 
>diff --git a/Source/WebCore/html/parser/HTMLTreeBuilder.h b/Source/WebCore/html/parser/HTMLTreeBuilder.h
>index 533017a345ae2fa030f2b814fb21ac18981cbfd2..4a5e2b487396aaeed0a96aa2ee7a3812c3938aed 100644
>--- a/Source/WebCore/html/parser/HTMLTreeBuilder.h
>+++ b/Source/WebCore/html/parser/HTMLTreeBuilder.h
>@@ -38,6 +38,8 @@ class HTMLDocumentParser;
> class ScriptElement;
> 
> struct CustomElementConstructionData {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     CustomElementConstructionData(Ref<JSCustomElementInterface>&&, const AtomicString& name, Vector<Attribute>&&);
>     ~CustomElementConstructionData();
> 
>diff --git a/Source/WebCore/html/track/WebVTTParser.h b/Source/WebCore/html/track/WebVTTParser.h
>index 2502ffff567131272b740dc06e3f2d6cd306e11e..cfc5717fd2bd529ea54dc8c8a9f8dc652ba9d45a 100644
>--- a/Source/WebCore/html/track/WebVTTParser.h
>+++ b/Source/WebCore/html/track/WebVTTParser.h
>@@ -97,6 +97,7 @@ private:
> };
> 
> class WebVTTParser final {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum ParseState {
>         Initial,
>diff --git a/Source/WebCore/inspector/DOMPatchSupport.cpp b/Source/WebCore/inspector/DOMPatchSupport.cpp
>index c8dba0231eb15531e3907c9b596ec11c2227b026..20da3430c15c8551485c5738c547fa0c3431a1ba 100644
>--- a/Source/WebCore/inspector/DOMPatchSupport.cpp
>+++ b/Source/WebCore/inspector/DOMPatchSupport.cpp
>@@ -58,6 +58,8 @@ using HTMLNames::headTag;
> using HTMLNames::htmlTag;
> 
> struct DOMPatchSupport::Digest {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     String sha1;
>     String attrsSHA1;
>     Node* node;
>diff --git a/Source/WebCore/loader/FrameLoaderClient.h b/Source/WebCore/loader/FrameLoaderClient.h
>index 915c09d4630e5cc3b73bbdd2a3b33aa6d63bb331..0f342966542150f319f019d8568ca93efcd3e725 100644
>--- a/Source/WebCore/loader/FrameLoaderClient.h
>+++ b/Source/WebCore/loader/FrameLoaderClient.h
>@@ -110,6 +110,7 @@ struct StringWithDirection;
> typedef WTF::Function<void (PolicyAction, PolicyCheckIdentifier)> FramePolicyFunction;
> 
> class WEBCORE_EXPORT FrameLoaderClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     // An inline function cannot be the first non-abstract virtual function declared
>     // in the class as it results in the vtable being generated as a weak symbol.
>diff --git a/Source/WebCore/loader/WorkerThreadableLoader.cpp b/Source/WebCore/loader/WorkerThreadableLoader.cpp
>index 4bad183e08548c47ddd98229ee9e62b4eb49b5cb..66d383426488dff818174aafda96b71781cbaff6 100644
>--- a/Source/WebCore/loader/WorkerThreadableLoader.cpp
>+++ b/Source/WebCore/loader/WorkerThreadableLoader.cpp
>@@ -89,6 +89,8 @@ void WorkerThreadableLoader::cancel()
> }
> 
> struct LoaderTaskOptions {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     LoaderTaskOptions(const ThreadableLoaderOptions&, const String&, Ref<SecurityOrigin>&&);
>     ThreadableLoaderOptions options;
>     String referrer;
>diff --git a/Source/WebCore/page/IntersectionObserver.h b/Source/WebCore/page/IntersectionObserver.h
>index 570227c5d20b974415349e0e50c60435df56a395..7c9854b8a5db46cf05544cf987b96b8e1d0185db 100644
>--- a/Source/WebCore/page/IntersectionObserver.h
>+++ b/Source/WebCore/page/IntersectionObserver.h
>@@ -48,6 +48,8 @@ struct IntersectionObserverRegistration {
> };
> 
> struct IntersectionObserverData {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     // IntersectionObservers for which the element that owns this IntersectionObserverData is the root.
>     // An IntersectionObserver is only owned by a JavaScript wrapper. ActiveDOMObject::hasPendingActivity
>     // is overridden to keep this wrapper alive while the observer has ongoing observations.
>diff --git a/Source/WebCore/page/PerformanceMonitor.h b/Source/WebCore/page/PerformanceMonitor.h
>index 64fd856629dc21c4494861093ccaac0be97e6f78..855fe6e753706d773523b782adee26932cc277dc 100644
>--- a/Source/WebCore/page/PerformanceMonitor.h
>+++ b/Source/WebCore/page/PerformanceMonitor.h
>@@ -35,6 +35,7 @@ namespace WebCore {
> class Page;
> 
> class PerformanceMonitor {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit PerformanceMonitor(Page&);
> 
>diff --git a/Source/WebCore/page/PerformanceUserTiming.h b/Source/WebCore/page/PerformanceUserTiming.h
>index a6448bcf31a976385601847cf8a56aeb51667f5d..f7fcd221429b8ba2f64e9df5f5b22a9f77c22a30 100644
>--- a/Source/WebCore/page/PerformanceUserTiming.h
>+++ b/Source/WebCore/page/PerformanceUserTiming.h
>@@ -38,6 +38,7 @@ class Performance;
> using PerformanceEntryMap = HashMap<String, Vector<RefPtr<PerformanceEntry>>>;
> 
> class UserTiming {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit UserTiming(Performance&);
> 
>diff --git a/Source/WebCore/page/PrintContext.h b/Source/WebCore/page/PrintContext.h
>index 9c5b63293e8f1d1d3a741f569bf94669b623e0cf..ab3b41b8d310a6e5d628afb72c46c7dd87c9ed9b 100644
>--- a/Source/WebCore/page/PrintContext.h
>+++ b/Source/WebCore/page/PrintContext.h
>@@ -38,6 +38,7 @@ class IntRect;
> class Node;
> 
> class PrintContext : public FrameDestructionObserver {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT explicit PrintContext(Frame*);
>     WEBCORE_EXPORT ~PrintContext();
>diff --git a/Source/WebCore/page/ValidationMessageClient.h b/Source/WebCore/page/ValidationMessageClient.h
>index 47de0fbbb94962f8ecd2cc3c0fa76c7d2d3916c9..5bf1838fbf83c92d1099ac49cb56c069eba7ab3e 100644
>--- a/Source/WebCore/page/ValidationMessageClient.h
>+++ b/Source/WebCore/page/ValidationMessageClient.h
>@@ -33,6 +33,7 @@ class Document;
> class Element;
> 
> class ValidationMessageClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~ValidationMessageClient() = default;
> 
>diff --git a/Source/WebCore/platform/ColorChooser.h b/Source/WebCore/platform/ColorChooser.h
>index 4ce7c30fe4599ab03b961c6fe5c42f4595c7e7ee..754bc66ffd7922daf46d3566d91e4e8217fba6bc 100644
>--- a/Source/WebCore/platform/ColorChooser.h
>+++ b/Source/WebCore/platform/ColorChooser.h
>@@ -37,6 +37,7 @@ namespace WebCore {
> class Color;
> 
> class ColorChooser {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~ColorChooser() = default;
> 
>diff --git a/Source/WebCore/platform/ControlStates.h b/Source/WebCore/platform/ControlStates.h
>index 9db97c540d667734316f33463a6865370939aa6d..b37ff492069acea9dc7ab48f60aa312a8978ba23 100644
>--- a/Source/WebCore/platform/ControlStates.h
>+++ b/Source/WebCore/platform/ControlStates.h
>@@ -42,6 +42,7 @@ typedef id PlatformControlInstance;
> #endif
> 
> class ControlStates {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum {
>         HoverState = 1,
>diff --git a/Source/WebCore/platform/DataListSuggestionPicker.h b/Source/WebCore/platform/DataListSuggestionPicker.h
>index 9ce192ae90fcc91c9a549c0089e521249c0e233c..468ca66d726674b3247205c2cb2a1ddab2852e11 100644
>--- a/Source/WebCore/platform/DataListSuggestionPicker.h
>+++ b/Source/WebCore/platform/DataListSuggestionPicker.h
>@@ -35,6 +35,7 @@
> namespace WebCore {
> 
> class DataListSuggestionPicker {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~DataListSuggestionPicker() = default;
> 
>diff --git a/Source/WebCore/platform/FileStream.h b/Source/WebCore/platform/FileStream.h
>index a2fb8e5faa254bc8e5cce9e1b4c6631b8d1a054c..5e5ee0e024be6520171b4a70bb086087ebec0f51 100644
>--- a/Source/WebCore/platform/FileStream.h
>+++ b/Source/WebCore/platform/FileStream.h
>@@ -36,6 +36,7 @@ namespace WebCore {
> 
> // All methods are synchronous.
> class FileStream {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     FileStream();
>     ~FileStream();
>diff --git a/Source/WebCore/platform/KeyedCoding.h b/Source/WebCore/platform/KeyedCoding.h
>index 21d4cef795516396335a3052c76670c4761fecb8..75bbe6db9dc329859330f42a69c45b2738dd4dbd 100644
>--- a/Source/WebCore/platform/KeyedCoding.h
>+++ b/Source/WebCore/platform/KeyedCoding.h
>@@ -34,6 +34,7 @@ namespace WebCore {
> class SharedBuffer;
> 
> class KeyedDecoder {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT static std::unique_ptr<KeyedDecoder> decoder(const uint8_t* data, size_t);
> 
>@@ -143,6 +144,7 @@ private:
> };
> 
> class KeyedEncoder {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT static std::unique_ptr<KeyedEncoder> encoder();
> 
>diff --git a/Source/WebCore/platform/LowPowerModeNotifier.h b/Source/WebCore/platform/LowPowerModeNotifier.h
>index 6b4b4477428728d5c5f5a0ea7f824e1b0ed2b4a4..2b05a9ce3805ce6864f85296d660454b838e4b48 100644
>--- a/Source/WebCore/platform/LowPowerModeNotifier.h
>+++ b/Source/WebCore/platform/LowPowerModeNotifier.h
>@@ -40,6 +40,7 @@ typedef struct _GDBusProxy GDBusProxy;
> namespace WebCore {
> 
> class LowPowerModeNotifier {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     using LowPowerModeChangeCallback = WTF::Function<void(bool isLowPowerModeEnabled)>;
>     WEBCORE_EXPORT explicit LowPowerModeNotifier(LowPowerModeChangeCallback&&);
>diff --git a/Source/WebCore/platform/PlatformSpeechSynthesizer.h b/Source/WebCore/platform/PlatformSpeechSynthesizer.h
>index 90dfe9c7e2566d5efa7c78193ae69fc903b9f768..63c9458425c1f9ceadba8c9502741e1b962eb47b 100644
>--- a/Source/WebCore/platform/PlatformSpeechSynthesizer.h
>+++ b/Source/WebCore/platform/PlatformSpeechSynthesizer.h
>@@ -59,6 +59,7 @@ protected:
> };
> 
> class WEBCORE_EXPORT PlatformSpeechSynthesizer {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT explicit PlatformSpeechSynthesizer(PlatformSpeechSynthesizerClient*);
> 
>diff --git a/Source/WebCore/platform/WebGLStateTracker.h b/Source/WebCore/platform/WebGLStateTracker.h
>index 6acf2ddbd088071bd8ea98196ec56f2937d3d69a..c90c01b093f15a42a683fff7ace443fad1b1c7d6 100644
>--- a/Source/WebCore/platform/WebGLStateTracker.h
>+++ b/Source/WebCore/platform/WebGLStateTracker.h
>@@ -32,6 +32,7 @@
> namespace WebCore {
> 
> class WebGLStateTracker {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     using StateChangeHandler = WTF::Function<void(bool isUsingWebGL)>;
>     WEBCORE_EXPORT explicit WebGLStateTracker(StateChangeHandler&&);
>diff --git a/Source/WebCore/platform/audio/AudioArray.h b/Source/WebCore/platform/audio/AudioArray.h
>index 1d60f46385c4717b11a39803db29c929c53cacc7..210b038605c638fb6182d8143449688d3ee6ca05 100644
>--- a/Source/WebCore/platform/audio/AudioArray.h
>+++ b/Source/WebCore/platform/audio/AudioArray.h
>@@ -37,6 +37,7 @@ namespace WebCore {
> 
> template<typename T>
> class AudioArray {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     AudioArray() : m_allocation(0), m_alignedData(0), m_size(0) { }
>     explicit AudioArray(size_t n) : m_allocation(0), m_alignedData(0), m_size(0)
>diff --git a/Source/WebCore/platform/audio/AudioDestination.h b/Source/WebCore/platform/audio/AudioDestination.h
>index 2065ac4326b28bea182bba3c426b023a4129168e..2cbaf48eb50f55d6daaef9b43a686bf4dc7a7917 100644
>--- a/Source/WebCore/platform/audio/AudioDestination.h
>+++ b/Source/WebCore/platform/audio/AudioDestination.h
>@@ -41,6 +41,7 @@ class AudioIOCallback;
> // It optionally will pass in local/live audio input when it calls render().
> 
> class AudioDestination {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     // Pass in (numberOfInputChannels > 0) if live/local audio input is desired.
>     // Port-specific device identification information for live/local input streams can be passed in the inputDeviceId.
>diff --git a/Source/WebCore/platform/audio/DownSampler.h b/Source/WebCore/platform/audio/DownSampler.h
>index 7a556ac768779484b31a9df995aa7ff1aad263cd..a671c6fe4830d2f5b48c1b44f895e5c9ec9393fb 100644
>--- a/Source/WebCore/platform/audio/DownSampler.h
>+++ b/Source/WebCore/platform/audio/DownSampler.h
>@@ -37,6 +37,7 @@ namespace WebCore {
> // DownSampler down-samples the source stream by a factor of 2x.
> 
> class DownSampler {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     DownSampler(size_t inputBlockSize);
> 
>diff --git a/Source/WebCore/platform/audio/DynamicsCompressor.h b/Source/WebCore/platform/audio/DynamicsCompressor.h
>index f716cef73a35ee6ee88ba98bb98d262537bd6975..ef8c093a1b9653229d799f1a6b292afadbdabad1 100644
>--- a/Source/WebCore/platform/audio/DynamicsCompressor.h
>+++ b/Source/WebCore/platform/audio/DynamicsCompressor.h
>@@ -44,6 +44,7 @@ class AudioBus;
> // making the sound richer, fuller, and more controlled.
> 
> class DynamicsCompressor {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum {
>         ParamThreshold,
>diff --git a/Source/WebCore/platform/audio/FFTFrame.h b/Source/WebCore/platform/audio/FFTFrame.h
>index 727c92a3a07ded9373764cc1adccbfeac04d5030..ca1eee67856fc061b9f40fda13bdc674203a2dab 100644
>--- a/Source/WebCore/platform/audio/FFTFrame.h
>+++ b/Source/WebCore/platform/audio/FFTFrame.h
>@@ -52,6 +52,7 @@ namespace WebCore {
> // and reverse FFT, internally storing the resultant frequency-domain data.
> 
> class FFTFrame {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     // The constructors, destructor, and methods up to the CROSS-PLATFORM section have platform-dependent implementations.
> 
>diff --git a/Source/WebCore/platform/audio/HRTFDatabase.h b/Source/WebCore/platform/audio/HRTFDatabase.h
>index 209b6c42b27bfa6b7ea9ccdeba1065a2b0c7563d..757bcfa4b6aefd70ebae86548725fa40629c6e9e 100644
>--- a/Source/WebCore/platform/audio/HRTFDatabase.h
>+++ b/Source/WebCore/platform/audio/HRTFDatabase.h
>@@ -40,6 +40,7 @@ namespace WebCore {
> class HRTFKernel;
> 
> class HRTFDatabase {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(HRTFDatabase);
> public:
>     explicit HRTFDatabase(float sampleRate);
>diff --git a/Source/WebCore/platform/audio/MultiChannelResampler.h b/Source/WebCore/platform/audio/MultiChannelResampler.h
>index 6afa5140ad1f661195400ba171eb2507c07863b6..629d57f3e947e835b16eee6c840b987f905a9004 100644
>--- a/Source/WebCore/platform/audio/MultiChannelResampler.h
>+++ b/Source/WebCore/platform/audio/MultiChannelResampler.h
>@@ -38,6 +38,7 @@ namespace WebCore {
> class AudioBus;
>     
> class MultiChannelResampler {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:   
>     MultiChannelResampler(double scaleFactor, unsigned numberOfChannels);
>     
>diff --git a/Source/WebCore/platform/audio/Panner.h b/Source/WebCore/platform/audio/Panner.h
>index 2700c4c6124e797839a661184897a5615f7d07c7..a680da189691ab24a98bcaea0e96f254ab34a407 100644
>--- a/Source/WebCore/platform/audio/Panner.h
>+++ b/Source/WebCore/platform/audio/Panner.h
>@@ -44,6 +44,7 @@ enum class PanningModelType {
> // Abstract base class for panning a mono or stereo source.
> 
> class Panner {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     static std::unique_ptr<Panner> create(PanningModelType, float sampleRate, HRTFDatabaseLoader*);
> 
>diff --git a/Source/WebCore/platform/audio/Reverb.h b/Source/WebCore/platform/audio/Reverb.h
>index 77c34fedb96a09f82144e0ce2a6e93a079a09d11..3e2576b35757dba2470c8eb7da3c17beebbfdced 100644
>--- a/Source/WebCore/platform/audio/Reverb.h
>+++ b/Source/WebCore/platform/audio/Reverb.h
>@@ -39,6 +39,7 @@ class AudioBus;
> // Multi-channel convolution reverb with channel matrixing - one or more ReverbConvolver objects are used internally.
> 
> class Reverb {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum { MaxFrameSize = 256 };
> 
>diff --git a/Source/WebCore/platform/audio/ReverbConvolver.h b/Source/WebCore/platform/audio/ReverbConvolver.h
>index d41f3c936b548de7b64322875a314fb8d10891c2..5b819e1a3e6f4fb1f8db0c59697262aac09c6bde 100644
>--- a/Source/WebCore/platform/audio/ReverbConvolver.h
>+++ b/Source/WebCore/platform/audio/ReverbConvolver.h
>@@ -44,6 +44,7 @@ namespace WebCore {
> class AudioChannel;
> 
> class ReverbConvolver {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     // maxFFTSize can be adjusted (from say 2048 to 32768) depending on how much precision is necessary.
>     // For certain tweaky de-convolving applications the phase errors add up quickly and lead to non-sensical results with
>diff --git a/Source/WebCore/platform/audio/ReverbConvolverStage.h b/Source/WebCore/platform/audio/ReverbConvolverStage.h
>index fd9e6927f3eedafc9a26db2f9c59f7ab5755b113..a0490970340ab3b33600b089e598474fb3d455e6 100644
>--- a/Source/WebCore/platform/audio/ReverbConvolverStage.h
>+++ b/Source/WebCore/platform/audio/ReverbConvolverStage.h
>@@ -43,6 +43,7 @@ class DirectConvolver;
> // A ReverbConvolverStage represents the convolution associated with a sub-section of a large impulse response.
> // It incorporates a delay line to account for the offset of the sub-section within the larger impulse response.
> class ReverbConvolverStage {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     // renderPhase is useful to know so that we can manipulate the pre versus post delay so that stages will perform
>     // their heavy work (FFT processing) on different slices to balance the load in a real-time thread.
>diff --git a/Source/WebCore/platform/audio/UpSampler.h b/Source/WebCore/platform/audio/UpSampler.h
>index 8b9c73d4d2f22d84977bca0063b629283517da05..205b62e260afcfd33fa35f6743488192931e7d68 100644
>--- a/Source/WebCore/platform/audio/UpSampler.h
>+++ b/Source/WebCore/platform/audio/UpSampler.h
>@@ -37,6 +37,7 @@ namespace WebCore {
> // UpSampler up-samples the source stream by a factor of 2x.
> 
> class UpSampler {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     UpSampler(size_t inputBlockSize);
> 
>diff --git a/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp b/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp
>index 5537c21ee41f4e587c4611784ee0e3ac62bdb4d4..b6e3ed0565c3a95f0dd795bddcdb1ef5b25060c6 100644
>--- a/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp
>+++ b/Source/WebCore/platform/audio/mac/AudioSessionMac.cpp
>@@ -53,6 +53,7 @@ static AudioDeviceID defaultDevice()
> }
> 
> class AudioSessionPrivate {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     AudioSessionPrivate(bool mutedState)
>         : lastMutedState(mutedState) { }
>diff --git a/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h b/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h
>index 032b697afb8e31a2eee44ae1746dae5f97d83c04..33af4c39436398291785320e897f11ac517dbb83 100644
>--- a/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h
>+++ b/Source/WebCore/platform/audio/mac/CAAudioStreamDescription.h
>@@ -34,6 +34,8 @@ WEBCORE_EXPORT bool operator==(const AudioStreamBasicDescription&, const AudioSt
> inline bool operator!=(const AudioStreamBasicDescription& a, const AudioStreamBasicDescription& b) { return !(a == b); }
> 
> class CAAudioStreamDescription final : public AudioStreamDescription {
>+    WTF_MAKE_FAST_ALLOCATED;
>+
> public:
> 
>     WEBCORE_EXPORT CAAudioStreamDescription();
>diff --git a/Source/WebCore/platform/audio/mac/CARingBuffer.h b/Source/WebCore/platform/audio/mac/CARingBuffer.h
>index c8ca7dbc39385caad9820ab029d68c685378a540..18a26ab6dc5c8dd01252db0646d4f5b9b47b6ff5 100644
>--- a/Source/WebCore/platform/audio/mac/CARingBuffer.h
>+++ b/Source/WebCore/platform/audio/mac/CARingBuffer.h
>@@ -58,6 +58,7 @@ private:
> };
> 
> class CARingBuffer {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WEBCORE_EXPORT CARingBuffer();
>     WEBCORE_EXPORT CARingBuffer(UniqueRef<CARingBufferStorage>&&);
>diff --git a/Source/WebCore/platform/cocoa/ScrollSnapAnimatorState.h b/Source/WebCore/platform/cocoa/ScrollSnapAnimatorState.h
>index 150db0bbc0d91e940c0a8b2e16591fa3fb6442bc..1c38dda8dc4d425e840db0d493392954a956bbd0 100644
>--- a/Source/WebCore/platform/cocoa/ScrollSnapAnimatorState.h
>+++ b/Source/WebCore/platform/cocoa/ScrollSnapAnimatorState.h
>@@ -48,6 +48,7 @@ enum class ScrollSnapState {
> };
> 
> class ScrollSnapAnimatorState {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     const Vector<LayoutUnit>& snapOffsetsForAxis(ScrollEventAxis axis) const
>     {
>diff --git a/Source/WebCore/platform/gamepad/PlatformGamepad.h b/Source/WebCore/platform/gamepad/PlatformGamepad.h
>index 65f91cc0fa638da73609b96938c8c7e9b86a689c..60c4cb36bac6787f3ec66c553e98ac56c7076a5b 100644
>--- a/Source/WebCore/platform/gamepad/PlatformGamepad.h
>+++ b/Source/WebCore/platform/gamepad/PlatformGamepad.h
>@@ -34,6 +34,7 @@
> namespace WebCore {
> 
> class PlatformGamepad {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~PlatformGamepad() = default;
> 
>diff --git a/Source/WebCore/platform/graphics/GraphicsLayer.cpp b/Source/WebCore/platform/graphics/GraphicsLayer.cpp
>index e23ef03111a89df5fdb88fe27e6f131d2de82798..08f013d0147a94352452ea2dd03e2c2d5e32711b 100644
>--- a/Source/WebCore/platform/graphics/GraphicsLayer.cpp
>+++ b/Source/WebCore/platform/graphics/GraphicsLayer.cpp
>@@ -112,6 +112,7 @@ bool GraphicsLayer::supportsContentsTiling()
> 
> // Singleton client used for layers on which clearClient has been called.
> class EmptyGraphicsLayerClient : public GraphicsLayerClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     static EmptyGraphicsLayerClient& singleton();
> };
>diff --git a/Source/WebCore/platform/graphics/GraphicsLayerFactory.h b/Source/WebCore/platform/graphics/GraphicsLayerFactory.h
>index a7e61041f3cdca56ea75883971d7e758fa7395a7..b7b88c071b7dd0397282d1000d2f01b0e459ae04 100644
>--- a/Source/WebCore/platform/graphics/GraphicsLayerFactory.h
>+++ b/Source/WebCore/platform/graphics/GraphicsLayerFactory.h
>@@ -31,6 +31,7 @@
> namespace WebCore {
> 
> class GraphicsLayerFactory {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~GraphicsLayerFactory() = default;
> 
>diff --git a/Source/WebCore/platform/graphics/PlatformTimeRanges.h b/Source/WebCore/platform/graphics/PlatformTimeRanges.h
>index abe4da07db13cdd1da10ba5e51c542ed7d82792c..1888695c76e926fb3ed4b3a510c9bb033b437330 100644
>--- a/Source/WebCore/platform/graphics/PlatformTimeRanges.h
>+++ b/Source/WebCore/platform/graphics/PlatformTimeRanges.h
>@@ -37,6 +37,7 @@ class PrintStream;
> namespace WebCore {
> 
> class PlatformTimeRanges {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit PlatformTimeRanges() { }
>     PlatformTimeRanges(const MediaTime& start, const MediaTime& end);
>diff --git a/Source/WebCore/platform/graphics/TextTrackRepresentation.h b/Source/WebCore/platform/graphics/TextTrackRepresentation.h
>index 3cde73a0bf4f30ec9a5e40036f96a0d00378be54..5dc255d47fd56cd547bd9b89ba971714a6f44ca7 100644
>--- a/Source/WebCore/platform/graphics/TextTrackRepresentation.h
>+++ b/Source/WebCore/platform/graphics/TextTrackRepresentation.h
>@@ -45,6 +45,7 @@ public:
> };
> 
> class TextTrackRepresentation {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     static std::unique_ptr<TextTrackRepresentation> create(TextTrackRepresentationClient&);
> 
>diff --git a/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.h b/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.h
>index 68b8c8a7c6be4a7b07f6c17a4efef35f833ad1c8..48a7808a67b692465a6b511591be830cfb039057 100644
>--- a/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.h
>+++ b/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.h
>@@ -41,6 +41,7 @@ namespace WebCore {
> class CDMPrivateMediaSourceAVFObjC;
> 
> class CDMSessionAVContentKeySession : public CDMSessionMediaSourceAVFObjC {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     CDMSessionAVContentKeySession(const Vector<int>& protocolVersions, CDMPrivateMediaSourceAVFObjC&, LegacyCDMSessionClient*);
>     virtual ~CDMSessionAVContentKeySession();
>diff --git a/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVStreamSession.h b/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVStreamSession.h
>index 0797ab2c7a4bcc483c8e751310b0588c53b68414..1c2ec57981bfa6633073cbd7b20c037bc428ae74 100644
>--- a/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVStreamSession.h
>+++ b/Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVStreamSession.h
>@@ -41,6 +41,7 @@ namespace WebCore {
> class CDMPrivateMediaSourceAVFObjC;
> 
> class CDMSessionAVStreamSession : public CDMSessionMediaSourceAVFObjC, public CanMakeWeakPtr<CDMSessionAVStreamSession> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     CDMSessionAVStreamSession(const Vector<int>& protocolVersions, CDMPrivateMediaSourceAVFObjC&, LegacyCDMSessionClient*);
>     virtual ~CDMSessionAVStreamSession();
>diff --git a/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlaybackTargetPickerMac.h b/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlaybackTargetPickerMac.h
>index 6fda29eca1af79b4b4aad4003c02f7ca6e4a7d03..642df65dfc877704b3b05f2e8368fec3c78c81ef 100644
>--- a/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlaybackTargetPickerMac.h
>+++ b/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlaybackTargetPickerMac.h
>@@ -37,6 +37,7 @@ OBJC_CLASS WebAVOutputDeviceMenuControllerHelper;
> namespace WebCore {
> 
> class MediaPlaybackTargetPickerMac final : public MediaPlaybackTargetPicker {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(MediaPlaybackTargetPickerMac);
> public:
>     explicit MediaPlaybackTargetPickerMac(MediaPlaybackTargetPicker::Client&);
>diff --git a/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h b/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h
>index b69d44ef2ebd663e397d6a405c8f60ce816fedcf..49e9181dbabe38be2fa6ffa0874d380bb81df09e 100644
>--- a/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h
>+++ b/Source/WebCore/platform/graphics/displaylists/DisplayListRecorder.h
>@@ -48,6 +48,7 @@ namespace DisplayList {
> class DrawingItem;
> 
> class Recorder : public GraphicsContextImpl {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(Recorder);
> public:
>     Recorder(GraphicsContext&, DisplayList&, const GraphicsContextState&, const FloatRect& initialClip, const AffineTransform&);
>diff --git a/Source/WebCore/platform/network/cocoa/WebCoreNSURLSession.mm b/Source/WebCore/platform/network/cocoa/WebCoreNSURLSession.mm
>index 17e6167995f671a954bf52cc0fec6e211a5034b7..9bcefac3b5c0dc9f76619e39dbdb29e603df2eb2 100644
>--- a/Source/WebCore/platform/network/cocoa/WebCoreNSURLSession.mm
>+++ b/Source/WebCore/platform/network/cocoa/WebCoreNSURLSession.mm
>@@ -373,6 +373,7 @@ @end
> namespace WebCore {
> 
> class WebCoreNSURLSessionDataTaskClient : public PlatformMediaResourceClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WebCoreNSURLSessionDataTaskClient(WebCoreNSURLSessionDataTask *task)
>         : m_task(task)
>diff --git a/Source/WebCore/platform/sql/SQLiteDatabase.h b/Source/WebCore/platform/sql/SQLiteDatabase.h
>index acec5490078356d4c0dc94ece0e08c5c56c1dc26..57d2ad869d4d2317ab063b5d6bae14d9ef09fa46 100644
>--- a/Source/WebCore/platform/sql/SQLiteDatabase.h
>+++ b/Source/WebCore/platform/sql/SQLiteDatabase.h
>@@ -46,6 +46,7 @@ class SQLiteStatement;
> class SQLiteTransaction;
> 
> class SQLiteDatabase {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(SQLiteDatabase);
>     friend class SQLiteTransaction;
> public:
>diff --git a/Source/WebCore/platform/text/TextCodecICU.h b/Source/WebCore/platform/text/TextCodecICU.h
>index abfd709860e12e1d2d088d939bb51071ea9d6151..54599f6319e301aa5b8bee0c01c6d86f149f5020 100644
>--- a/Source/WebCore/platform/text/TextCodecICU.h
>+++ b/Source/WebCore/platform/text/TextCodecICU.h
>@@ -59,9 +59,9 @@ private:
> };
> 
> struct ICUConverterWrapper {
>-    ICUConverterPtr converter { nullptr, ucnv_close };
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
> 
>-    WTF_MAKE_FAST_ALLOCATED;
>+    ICUConverterPtr converter { nullptr, ucnv_close };
> };
> 
> } // namespace WebCore
>diff --git a/Source/WebCore/rendering/GridBaselineAlignment.h b/Source/WebCore/rendering/GridBaselineAlignment.h
>index 9dd49fe181f73f6b036fe8a1aa4c6f560f27fe2a..f515d80e8b851b6230061e05948e05cc36c0a15f 100644
>--- a/Source/WebCore/rendering/GridBaselineAlignment.h
>+++ b/Source/WebCore/rendering/GridBaselineAlignment.h
>@@ -93,6 +93,7 @@ private:
> // if there is one that is compatible with such item. Otherwise, a new baseline-sharing group is created,
> // compatible with the new item.
> class BaselineContext {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     BaselineContext(const RenderBox& child, ItemPosition preference, LayoutUnit ascent, LayoutUnit descent);
>     const BaselineGroup& sharedGroup(const RenderBox& child, ItemPosition preference) const;
>diff --git a/Source/WebCore/rendering/GridTrackSizingAlgorithm.h b/Source/WebCore/rendering/GridTrackSizingAlgorithm.h
>index 899573cbdc2b04e79d0eda604c0ee039440a9e9b..75b101ed6e19cc509cdafc3050dc1890c1eef85b 100644
>--- a/Source/WebCore/rendering/GridTrackSizingAlgorithm.h
>+++ b/Source/WebCore/rendering/GridTrackSizingAlgorithm.h
>@@ -242,6 +242,7 @@ private:
> };
> 
> class GridTrackSizingAlgorithmStrategy {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     LayoutUnit minContentForChild(RenderBox&) const;
>     LayoutUnit maxContentForChild(RenderBox&) const;
>diff --git a/Source/WebCore/rendering/RenderObject.h b/Source/WebCore/rendering/RenderObject.h
>index d08c1db0a2e2f6193620f3a752947e4b98152a77..87e8801a8a116d4c29aaf79bd99a6e6db913d293 100644
>--- a/Source/WebCore/rendering/RenderObject.h
>+++ b/Source/WebCore/rendering/RenderObject.h
>@@ -981,6 +981,7 @@ private:
> 
>     // FIXME: This should be RenderElementRareData.
>     class RenderObjectRareData {
>+        WTF_MAKE_FAST_ALLOCATED;
>     public:
>         RenderObjectRareData()
>             : m_isDragging(false)
>diff --git a/Source/WebCore/rendering/style/GridArea.h b/Source/WebCore/rendering/style/GridArea.h
>index 81e66b21e20e18e6a7acf77d5281d251e3afece4..db8018581cfebef9ad1a9ceb5ba3b9d3e81418cc 100644
>--- a/Source/WebCore/rendering/style/GridArea.h
>+++ b/Source/WebCore/rendering/style/GridArea.h
>@@ -169,6 +169,7 @@ private:
> 
> // This represents a grid area that spans in both rows' and columns' direction.
> class GridArea {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     // HashMap requires a default constuctor.
>     GridArea()
>diff --git a/Source/WebCore/workers/service/context/SWContextManager.h b/Source/WebCore/workers/service/context/SWContextManager.h
>index d24dd3e534350357e60f7ea9f765769bf370a9d3..f97ee6a1a91debab5356699efbf3fdf7431a3b89 100644
>--- a/Source/WebCore/workers/service/context/SWContextManager.h
>+++ b/Source/WebCore/workers/service/context/SWContextManager.h
>@@ -45,6 +45,7 @@ public:
>     WEBCORE_EXPORT static SWContextManager& singleton();
> 
>     class Connection {
>+        WTF_MAKE_FAST_ALLOCATED;
>     public:
>         virtual ~Connection() { }
> 
>@@ -93,6 +94,7 @@ private:
>     ServiceWorkerCreationCallback* m_serviceWorkerCreationCallback { nullptr };
> 
>     class ServiceWorkerTerminationRequest {
>+        WTF_MAKE_FAST_ALLOCATED;
>     public:
>         ServiceWorkerTerminationRequest(SWContextManager&, ServiceWorkerIdentifier, Seconds timeout);
> 
>diff --git a/Source/WebKit/NetworkProcess/NetworkLoad.cpp b/Source/WebKit/NetworkProcess/NetworkLoad.cpp
>index b0b14141d3c0e9acbbe5e3386582390ad49f7308..fd62a14c2d78c8ca5a5af0ffba166131d6712ab5 100644
>--- a/Source/WebKit/NetworkProcess/NetworkLoad.cpp
>+++ b/Source/WebKit/NetworkProcess/NetworkLoad.cpp
>@@ -38,6 +38,8 @@ namespace WebKit {
> using namespace WebCore;
> 
> struct NetworkLoad::Throttle {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     Throttle(NetworkLoad& load, Seconds delay, ResourceResponse&& response, ResponseCompletionHandler&& handler)
>         : timer(load, &NetworkLoad::throttleDelayCompleted)
>         , response(WTFMove(response))
>diff --git a/Source/WebKit/NetworkProcess/NetworkLoadChecker.h b/Source/WebKit/NetworkProcess/NetworkLoadChecker.h
>index c95cd4c3ef7e4553d9d7df70a2bf20a6f7c01442..d7e02a5850096632ccf9b2a439e43cbee46c146a 100644
>--- a/Source/WebKit/NetworkProcess/NetworkLoadChecker.h
>+++ b/Source/WebKit/NetworkProcess/NetworkLoadChecker.h
>@@ -50,6 +50,7 @@ class NetworkCORSPreflightChecker;
> class NetworkProcess;
> 
> class NetworkLoadChecker : public CanMakeWeakPtr<NetworkLoadChecker> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum class LoadType : bool { MainFrame, Other };
> 
>diff --git a/Source/WebKit/NetworkProcess/NetworkResourceLoader.cpp b/Source/WebKit/NetworkProcess/NetworkResourceLoader.cpp
>index 591a74e42920530fd631752019963410273f675e..ee8869548ae294a7ec43ad5014ecb41b75e245bb 100644
>--- a/Source/WebKit/NetworkProcess/NetworkResourceLoader.cpp
>+++ b/Source/WebKit/NetworkProcess/NetworkResourceLoader.cpp
>@@ -64,6 +64,8 @@ namespace WebKit {
> using namespace WebCore;
> 
> struct NetworkResourceLoader::SynchronousLoadData {
>+    WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>     SynchronousLoadData(Messages::NetworkConnectionToWebProcess::PerformSynchronousLoad::DelayedReply&& reply)
>         : delayedReply(WTFMove(reply))
>     {
>diff --git a/Source/WebKit/Platform/IPC/Connection.h b/Source/WebKit/Platform/IPC/Connection.h
>index e81e81e35de55fe2c44d828e1e72cf8be93dc9b1..0ca3a3f1e81b2d123c37eb69aad1daad2a93ffe2 100644
>--- a/Source/WebKit/Platform/IPC/Connection.h
>+++ b/Source/WebKit/Platform/IPC/Connection.h
>@@ -263,6 +263,7 @@ private:
> #endif
> 
>     class MessagesThrottler {
>+        WTF_MAKE_FAST_ALLOCATED;
>     public:
>         typedef void (Connection::*DispatchMessagesFunction)();
>         MessagesThrottler(Connection&, DispatchMessagesFunction);
>diff --git a/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h b/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>index d9765d1854c5508dca69760c40619df1e7a40a29..6f90b0434182bd0851ea9464830e82662b68b144 100644
>--- a/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>+++ b/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>@@ -33,6 +33,7 @@
> namespace IPC {
> 
> class ImportanceAssertion {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(ImportanceAssertion);
> 
> public:
>diff --git a/Source/WebKit/PluginProcess/PluginCreationParameters.h b/Source/WebKit/PluginProcess/PluginCreationParameters.h
>index c3751682cc1a56bf64db1a1f0fbeb7a210889674..e6678e9e51e8336cccabfb065e52581de6708992 100644
>--- a/Source/WebKit/PluginProcess/PluginCreationParameters.h
>+++ b/Source/WebKit/PluginProcess/PluginCreationParameters.h
>@@ -38,6 +38,8 @@ class Encoder;
> namespace WebKit {
> 
> struct PluginCreationParameters {
>+    WTF_MAKE_FAST_ALLOCATED;
>+public:
>     PluginCreationParameters();
> 
>     void encode(IPC::Encoder&) const;
>diff --git a/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h b/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h
>index 2c9d99be7d69b6fc892bcc03b2e477a997d93f04..a72f01893ae6acffb613a2d29ea91c5b7639eef6 100644
>--- a/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h
>+++ b/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h
>@@ -44,6 +44,7 @@ class WebPage;
> class WebPageProxy;
> 
> class RemoteObjectRegistry final : public IPC::MessageReceiver {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     RemoteObjectRegistry(_WKRemoteObjectRegistry *, WebPage&);
>     RemoteObjectRegistry(_WKRemoteObjectRegistry *, WebPageProxy&);
>diff --git a/Source/WebKit/Shared/WebEvent.h b/Source/WebKit/Shared/WebEvent.h
>index 96572c5e4a140a22de5c83574372fe25f57f1cbe..b42539e47858afa8ebe373a63336e08789d2d505 100644
>--- a/Source/WebKit/Shared/WebEvent.h
>+++ b/Source/WebKit/Shared/WebEvent.h
>@@ -52,6 +52,7 @@ struct KeypressCommand;
> namespace WebKit {
> 
> class WebEvent {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum Type {
>         NoType = -1,
>diff --git a/Source/WebKit/UIProcess/API/APIHTTPCookieStore.cpp b/Source/WebKit/UIProcess/API/APIHTTPCookieStore.cpp
>index 42fc6ac2d2ec3a30e9bda5a686b3adb36b12dfed..2e917fbf902dfcd229b501c003d2798c5112f698 100644
>--- a/Source/WebKit/UIProcess/API/APIHTTPCookieStore.cpp
>+++ b/Source/WebKit/UIProcess/API/APIHTTPCookieStore.cpp
>@@ -118,6 +118,7 @@ void HTTPCookieStore::deleteCookie(const WebCore::Cookie& cookie, CompletionHand
> }
> 
> class APIWebCookieManagerProxyObserver : public WebCookieManagerProxy::Observer {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit APIWebCookieManagerProxyObserver(API::HTTPCookieStore& cookieStore)
>         : m_cookieStore(cookieStore)
>diff --git a/Source/WebKit/UIProcess/API/APINotificationProvider.h b/Source/WebKit/UIProcess/API/APINotificationProvider.h
>index 9be8e8cc6428ef6737657d995e10c1d6ea7df18e..c4813aa51650863e7ad2a519dcf1dbd93e8f2255 100644
>--- a/Source/WebKit/UIProcess/API/APINotificationProvider.h
>+++ b/Source/WebKit/UIProcess/API/APINotificationProvider.h
>@@ -38,6 +38,7 @@ class WebPageProxy;
> namespace API {
> 
> class NotificationProvider {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~NotificationProvider() = default;
> 
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h b/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h
>index 682805083e940f1675192829a0a8b94a09002fa8..047274002ab8478b716ebd046e2078849a079556 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h
>+++ b/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h
>@@ -31,6 +31,7 @@
> namespace WebKit {
> 
> class PageLoadStateObserver : public PageLoadState::Observer {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     PageLoadStateObserver(id object, NSString *activeURLKey = @"activeURL")
>         : m_object(object)
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm b/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm
>index c858033ae591b3a2239b01f1b9b0f39fdfbb40a7..52d2babc634867dda2169057c1cec1be24a6733a 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm
>@@ -47,6 +47,7 @@ static NSArray<NSHTTPCookie *> *coreCookiesToNSCookies(const Vector<WebCore::Coo
> }
> 
> class WKHTTPCookieStoreObserver : public API::HTTPCookieStore::Observer {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WKHTTPCookieStoreObserver(id<WKHTTPCookieStoreObserver> observer)
>         : m_observer(observer)
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm b/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm
>index 757c958bf0a8e5bd8f3349636aab44d67fbfd4e9..0f167d1c1521abbe2e3e96e7129283bd9b108a66 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm
>@@ -5380,6 +5380,7 @@ - (void)_setInputDelegate:(id <_WKInputDelegate>)inputDelegate
>     _inputDelegate = inputDelegate;
> 
>     class FormClient : public API::FormClient {
>+        WTF_MAKE_FAST_ALLOCATED;
>     public:
>         explicit FormClient(WKWebView *webView)
>             : m_webView(webView)
>diff --git a/Source/WebKit/UIProcess/API/gtk/PageClientImpl.h b/Source/WebKit/UIProcess/API/gtk/PageClientImpl.h
>index 6dea8f39fd8151d464ce64a15e530ce96f9c4de3..d27842e734329b4dea7c8d71e397d32b721b4686 100644
>--- a/Source/WebKit/UIProcess/API/gtk/PageClientImpl.h
>+++ b/Source/WebKit/UIProcess/API/gtk/PageClientImpl.h
>@@ -48,6 +48,7 @@ class PageClientImpl : public PageClient
>     , public WebFullScreenManagerProxyClient
> #endif
> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit PageClientImpl(GtkWidget*);
> 
>diff --git a/Source/WebKit/UIProcess/BackingStore.h b/Source/WebKit/UIProcess/BackingStore.h
>index 14de1f424aaf190cde2b329e9b931a53f5daead0..987cc16d47ef5891c3f65ff9d7d5e6f1b46c0808 100644
>--- a/Source/WebKit/UIProcess/BackingStore.h
>+++ b/Source/WebKit/UIProcess/BackingStore.h
>@@ -40,6 +40,7 @@ class UpdateInfo;
> class WebPageProxy;
> 
> class BackingStore {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(BackingStore);
> 
> public:
>diff --git a/Source/WebKit/UIProcess/Cocoa/AutomationClient.h b/Source/WebKit/UIProcess/Cocoa/AutomationClient.h
>index 565e6ba0c0723265a2af2cfaf81e324e2a704360..e663d1c8a156276bed3046c8774b6f573accac7a 100644
>--- a/Source/WebKit/UIProcess/Cocoa/AutomationClient.h
>+++ b/Source/WebKit/UIProcess/Cocoa/AutomationClient.h
>@@ -40,6 +40,7 @@
> namespace WebKit {
> 
> class AutomationClient final : public API::AutomationClient, Inspector::RemoteInspector::Client {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit AutomationClient(WKProcessPool *, id <_WKAutomationDelegate>);
>     virtual ~AutomationClient();
>diff --git a/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h b/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h
>index f074b7b4dc3759e5a3e7ee2c18778165968371e3..e5b1c90b9d19a0c9904ae463004c13bd0022d286 100644
>--- a/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h
>+++ b/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h
>@@ -40,6 +40,7 @@
> namespace WebKit {
> 
> class DiagnosticLoggingClient final : public API::DiagnosticLoggingClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DiagnosticLoggingClient(WKWebView *);
> 
>diff --git a/Source/WebKit/UIProcess/Cocoa/DownloadClient.h b/Source/WebKit/UIProcess/Cocoa/DownloadClient.h
>index 118866cc6f19586f4814fd6ec4711cb42bde21b4..841aa1046220c75fc1c76c8c188a8dd717df8683 100644
>--- a/Source/WebKit/UIProcess/Cocoa/DownloadClient.h
>+++ b/Source/WebKit/UIProcess/Cocoa/DownloadClient.h
>@@ -43,6 +43,7 @@ class ResourceResponse;
> namespace WebKit {
> 
> class DownloadClient final : public API::DownloadClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit DownloadClient(id <_WKDownloadDelegate>);
>     
>diff --git a/Source/WebKit/UIProcess/Cocoa/FindClient.h b/Source/WebKit/UIProcess/Cocoa/FindClient.h
>index 4fca562fabaa0430ce2821d77c31affc00553fd6..e616849a4a1dfca7a12c356c0534a001dfd452c9 100644
>--- a/Source/WebKit/UIProcess/Cocoa/FindClient.h
>+++ b/Source/WebKit/UIProcess/Cocoa/FindClient.h
>@@ -39,6 +39,7 @@
> namespace WebKit {
> 
> class FindClient final : public API::FindClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit FindClient(WKWebView *);
>     
>diff --git a/Source/WebKit/UIProcess/Cocoa/NavigationState.h b/Source/WebKit/UIProcess/Cocoa/NavigationState.h
>index d87c5603ae255252970ca7bf4f8111049df1613c..71e8401caefe36dd9c301c9993e92ab849b6aefd 100644
>--- a/Source/WebKit/UIProcess/Cocoa/NavigationState.h
>+++ b/Source/WebKit/UIProcess/Cocoa/NavigationState.h
>@@ -56,6 +56,7 @@ namespace WebKit {
> struct WebNavigationDataStore;
> 
> class NavigationState final : private PageLoadState::Observer {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit NavigationState(WKWebView *);
>     ~NavigationState();
>diff --git a/Source/WebKit/UIProcess/Cocoa/UIDelegate.h b/Source/WebKit/UIProcess/Cocoa/UIDelegate.h
>index cdc4faac8b23d2e8c3e4105c4cec93a525ec5b43..b3a4352ff66e2232781b64023e7f12dbfe47f09b 100644
>--- a/Source/WebKit/UIProcess/Cocoa/UIDelegate.h
>+++ b/Source/WebKit/UIProcess/Cocoa/UIDelegate.h
>@@ -46,6 +46,7 @@ class SecurityOrigin;
> namespace WebKit {
> 
> class UIDelegate {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit UIDelegate(WKWebView *);
>     ~UIDelegate();
>diff --git a/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h b/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h
>index a18fd8fa45a7a2a74a4df746f146311674ee5109..82f2dd0fdbb4bb160793146cafafd08534482b07 100644
>--- a/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h
>+++ b/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h
>@@ -64,6 +64,7 @@ class WebPageProxy;
> class WebProcessProxy;
> 
> class ViewGestureController : private IPC::MessageReceiver {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(ViewGestureController);
> public:
>     ViewGestureController(WebPageProxy&);
>diff --git a/Source/WebKit/UIProcess/DeviceIdHashSaltStorage.h b/Source/WebKit/UIProcess/DeviceIdHashSaltStorage.h
>index cacd4692ba3caaf56244762e7233057baaf68caf..28caa7ca80309811ffa3b89ce370846cbed9184b 100644
>--- a/Source/WebKit/UIProcess/DeviceIdHashSaltStorage.h
>+++ b/Source/WebKit/UIProcess/DeviceIdHashSaltStorage.h
>@@ -49,6 +49,8 @@ public:
> 
> private:
>     struct HashSaltForOrigin {
>+        WTF_MAKE_STRUCT_FAST_ALLOCATED;
>+
>         HashSaltForOrigin(WebCore::SecurityOriginData&& documentOrigin, WebCore::SecurityOriginData&& parentOrigin, String&& deviceIdHashSalt)
>             : documentOrigin(WTFMove(documentOrigin))
>             , parentOrigin(WTFMove(parentOrigin))
>diff --git a/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h b/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h
>index 72630bdeaedab29a05db13be308a6b42b59ba3f3..84583ddebab85045cbdb8135152555e61df9d694 100644
>--- a/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h
>+++ b/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h
>@@ -40,6 +40,7 @@ class NetworkProcessProxy;
> class WebProcessPool;
> 
> class DownloadProxyMap {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(DownloadProxyMap);
> 
> public:
>diff --git a/Source/WebKit/UIProcess/Gamepad/UIGamepad.h b/Source/WebKit/UIProcess/Gamepad/UIGamepad.h
>index 9df6e21862a2f6d627e4fed3d0c40ae2549c2047..b02915091e387c049ece8ed0c3caf142452d0252 100644
>--- a/Source/WebKit/UIProcess/Gamepad/UIGamepad.h
>+++ b/Source/WebKit/UIProcess/Gamepad/UIGamepad.h
>@@ -40,6 +40,7 @@ namespace WebKit {
> class GamepadData;
> 
> class UIGamepad {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     UIGamepad(WebCore::PlatformGamepad&);
> 
>diff --git a/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h b/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h
>index 64614dcc94112ee885fd7996b827068a06efc896..7b2e9ce1c5a67d9f2757ef974a0dae38c5f042b0 100644
>--- a/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h
>+++ b/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h
>@@ -44,6 +44,7 @@ class WebNotificationManagerProxy;
> class WebPageProxy;
> 
> class WebNotificationProvider : public API::NotificationProvider, public API::Client<WKNotificationProviderBase> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WebNotificationProvider(const WKNotificationProviderBase*);
> 
>diff --git a/Source/WebKit/UIProcess/ProcessAssertion.h b/Source/WebKit/UIProcess/ProcessAssertion.h
>index e9b13c438e8bd0ece2b1e7424473eb9df08a51aa..1f858e40eec6d57fd7d2bf000364a6bb18faf8a6 100644
>--- a/Source/WebKit/UIProcess/ProcessAssertion.h
>+++ b/Source/WebKit/UIProcess/ProcessAssertion.h
>@@ -60,6 +60,7 @@ class ProcessAssertion
>     : public CanMakeWeakPtr<ProcessAssertion>
> #endif
> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     ProcessAssertion(ProcessID, AssertionState, Function<void()>&& invalidationCallback = { });
>     ProcessAssertion(ProcessID, const String& reason, AssertionState, Function<void()>&& invalidationCallback = { });
>diff --git a/Source/WebKit/UIProcess/RemoteLayerTree/RemoteLayerTreeHost.h b/Source/WebKit/UIProcess/RemoteLayerTree/RemoteLayerTreeHost.h
>index 847ba58585b8af914db48c1c14991292033a01d9..a8e1e0853ba9622a8d8c78d63021a3681e6f84db 100644
>--- a/Source/WebKit/UIProcess/RemoteLayerTree/RemoteLayerTreeHost.h
>+++ b/Source/WebKit/UIProcess/RemoteLayerTree/RemoteLayerTreeHost.h
>@@ -41,6 +41,7 @@ class RemoteLayerTreeDrawingAreaProxy;
> class WebPageProxy;
> 
> class RemoteLayerTreeHost {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit RemoteLayerTreeHost(RemoteLayerTreeDrawingAreaProxy&);
>     ~RemoteLayerTreeHost();
>diff --git a/Source/WebKit/UIProcess/WebContextInjectedBundleClient.h b/Source/WebKit/UIProcess/WebContextInjectedBundleClient.h
>index 538e1996b0dbf7ff3a14c99c0e40d22ffef2d422..abfd6a4b786ff5f24fb9cdd5ca9617b1950740a4 100644
>--- a/Source/WebKit/UIProcess/WebContextInjectedBundleClient.h
>+++ b/Source/WebKit/UIProcess/WebContextInjectedBundleClient.h
>@@ -43,6 +43,7 @@ namespace WebKit {
> class WebProcessPool;
> 
> class WebContextInjectedBundleClient : public API::InjectedBundleClient, public API::Client<WKContextInjectedBundleClientBase> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WebContextInjectedBundleClient(const WKContextInjectedBundleClientBase*);
> 
>diff --git a/Source/WebKit/UIProcess/WebFormClient.h b/Source/WebKit/UIProcess/WebFormClient.h
>index 33061480900540b7d7ff0e1d06cf2196f8ac23a9..d34e910490457cdfa234fb2e173fce9aafe057d3 100644
>--- a/Source/WebKit/UIProcess/WebFormClient.h
>+++ b/Source/WebKit/UIProcess/WebFormClient.h
>@@ -38,6 +38,7 @@ template<> struct ClientTraits<WKPageFormClientBase> {
> namespace WebKit {
> 
> class WebFormClient : public API::FormClient, API::Client<WKPageFormClientBase> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WebFormClient(const WKPageFormClientBase*);
> 
>diff --git a/Source/WebKit/UIProcess/WebGeolocationProvider.h b/Source/WebKit/UIProcess/WebGeolocationProvider.h
>index 41bbc6c3b824a57fb2f8af779e268b1b4a90890c..f0569febdefb3e7eb150d8661159d5211a339ee3 100644
>--- a/Source/WebKit/UIProcess/WebGeolocationProvider.h
>+++ b/Source/WebKit/UIProcess/WebGeolocationProvider.h
>@@ -42,6 +42,7 @@ namespace WebKit {
> class WebGeolocationManagerProxy;
> 
> class WebGeolocationProvider : public API::GeolocationProvider, API::Client<WKGeolocationProviderBase> {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     explicit WebGeolocationProvider(const WKGeolocationProviderBase*);
> 
>diff --git a/Source/WebKit/UIProcess/WebPageProxy.h b/Source/WebKit/UIProcess/WebPageProxy.h
>index 7be91943890b75d0e28ca3701f5b467ec08747a2..451caa58cfa133df01bfd156fb83bc8df435771b 100644
>--- a/Source/WebKit/UIProcess/WebPageProxy.h
>+++ b/Source/WebKit/UIProcess/WebPageProxy.h
>@@ -317,6 +317,8 @@ typedef GenericCallback<const WebCore::IntPoint&, uint32_t, uint32_t> TouchesCal
> typedef GenericCallback<const Vector<WebCore::SelectionRect>&> SelectionRectsCallback;
> typedef GenericCallback<const FocusedElementInformation&> FocusedElementInformationCallback;
> struct ElementDidFocusArguments {
>+    WTF_MAKE_FAST_ALLOCATED;
>+public:
>     FocusedElementInformation information;
>     bool userIsInteracting;
>     bool blurPreviousNode;
>diff --git a/Source/WebKit/WebProcess/Automation/WebAutomationSessionProxy.h b/Source/WebKit/WebProcess/Automation/WebAutomationSessionProxy.h
>index b5388686848708fa0683bc61fcb4bbb417ee4877..7560f069571fc8c401fc59ab2149700515be95ce 100644
>--- a/Source/WebKit/WebProcess/Automation/WebAutomationSessionProxy.h
>+++ b/Source/WebKit/WebProcess/Automation/WebAutomationSessionProxy.h
>@@ -40,6 +40,7 @@ class WebFrame;
> class WebPage;
> 
> class WebAutomationSessionProxy : public IPC::MessageReceiver {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WebAutomationSessionProxy(const String& sessionIdentifier);
>     ~WebAutomationSessionProxy();
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleBundleClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleBundleClient.h
>index dbc1c6dcca6bf4788fbc609c9de47178e4cd77be..92f9abac8497e6037bca88bd519e9c8400d9a8ba 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleBundleClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleBundleClient.h
>@@ -39,6 +39,7 @@ class Object;
> namespace InjectedBundle {
> 
> class Client {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~Client() = default;
> 
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleEditorClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleEditorClient.h
>index 6015e5f87737949145bc7a1cacf2a978b85f38b8..ea3dd1b518e5c85daa21fd14023692496d041f2a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleEditorClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundleEditorClient.h
>@@ -47,6 +47,7 @@ namespace API {
> namespace InjectedBundle {
> 
> class EditorClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~EditorClient() { }
> 
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h
>index 29794558aade9f2753367fe78d61229ae1371c29..553932a233d6265756bbd68629ae2aba35a2513a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h
>@@ -48,6 +48,7 @@ class Object;
> namespace InjectedBundle {
> 
> class PageContextMenuClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~PageContextMenuClient() { }
> 
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageLoaderClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageLoaderClient.h
>index c6e97ab13db06b24154054eab41926d47f91ec03..419eb7b549efa8e7ba568b5331d2916f64cc05ad 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageLoaderClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageLoaderClient.h
>@@ -51,6 +51,7 @@ class Object;
> namespace InjectedBundle {
> 
> class PageLoaderClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~PageLoaderClient() = default;
> 
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageResourceLoadClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageResourceLoadClient.h
>index f246f5c8aa7a683911895284493f9a422238fd87..3f827a01f4881744666a36ee7abaa73070140d4b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageResourceLoadClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageResourceLoadClient.h
>@@ -41,6 +41,7 @@ namespace API {
> namespace InjectedBundle {
> 
> class ResourceLoadClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~ResourceLoadClient() = default;
> 
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageUIClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageUIClient.h
>index 749d32dd87b04d9d8df262c982577508737a9f38..eaca3e7163f2a8c7925f793c48e0d3f977b7a979 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageUIClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageUIClient.h
>@@ -46,6 +46,7 @@ class SecurityOrigin;
> namespace InjectedBundle {
> 
> class PageUIClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~PageUIClient() { }
> 
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h b/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h
>index 5449227e388966ef019356a42abf6d8236cf9908..92ebcfe013cc379896db7f143393710cd5b12ee9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h
>@@ -47,6 +47,7 @@ class Object;
> namespace InjectedBundle {
> 
> class FormClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     virtual ~FormClient() { }
> 
>diff --git a/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCNetwork.h b/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCNetwork.h
>index 375b260471c7864e468ead40944f711ddf992383..7c6484fe78d78d74cb328331f976afab423b72f5 100644
>--- a/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCNetwork.h
>+++ b/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCNetwork.h
>@@ -37,6 +37,7 @@
> namespace WebKit {
> 
> class LibWebRTCNetwork {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     LibWebRTCNetwork() = default;
> 
>diff --git a/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCSocket.h b/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCSocket.h
>index 5974a8ca43eaab3ba51611fb15244ae31b59de91..af1f4253016de3e1937e136e3a9d28e20c124467 100644
>--- a/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCSocket.h
>+++ b/Source/WebKit/WebProcess/Network/webrtc/LibWebRTCSocket.h
>@@ -47,6 +47,7 @@ namespace WebKit {
> class LibWebRTCSocketFactory;
> 
> class LibWebRTCSocket final : public rtc::AsyncPacketSocket {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     enum class Type { UDP, ServerTCP, ClientTCP, ServerConnectionTCP };
> 
>diff --git a/Source/WebKit/WebProcess/Network/webrtc/WebRTCResolver.h b/Source/WebKit/WebProcess/Network/webrtc/WebRTCResolver.h
>index 547f01c388dab80c1a54f748f457f4af821ade8e..b171991a2da3704defadb1f389f966c52c923df7 100644
>--- a/Source/WebKit/WebProcess/Network/webrtc/WebRTCResolver.h
>+++ b/Source/WebKit/WebProcess/Network/webrtc/WebRTCResolver.h
>@@ -40,6 +40,7 @@ namespace WebKit {
> class LibWebRTCSocketFactory;
> 
> class WebRTCResolver {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     WebRTCResolver(LibWebRTCSocketFactory&, uint64_t);
> 
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebInspectorClient.cpp b/Source/WebKit/WebProcess/WebCoreSupport/WebInspectorClient.cpp
>index c6b1fe1e81e15293b3de65e2b71d327031ecfd64..2966c3d5e4f4e8a8256a8a3c1cda1110a3e6a383 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebInspectorClient.cpp
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebInspectorClient.cpp
>@@ -43,6 +43,7 @@ namespace WebKit {
> using namespace WebCore;
> 
> class RepaintIndicatorLayerClient final : public GraphicsLayerClient {
>+    WTF_MAKE_FAST_ALLOCATED;
> public:
>     RepaintIndicatorLayerClient(WebInspectorClient& inspectorClient)
>         : m_inspectorClient(inspectorClient)
>diff --git a/Source/WebKit/WebProcess/WebPage/DrawingArea.h b/Source/WebKit/WebProcess/WebPage/DrawingArea.h
>index 6d8459d3a6bad09fd015727f6f2ddf6c8fc5b8bf..7ee228ce18a64089a2dc568088e8231b76f8af78 100644
>--- a/Source/WebKit/WebProcess/WebPage/DrawingArea.h
>+++ b/Source/WebKit/WebProcess/WebPage/DrawingArea.h
>@@ -66,6 +66,7 @@ struct WebPageCreationParameters;
> struct WebPreferencesStore;
> 
> class DrawingArea : public IPC::MessageReceiver {
>+    WTF_MAKE_FAST_ALLOCATED;
>     WTF_MAKE_NONCOPYABLE(DrawingArea);
> 
> public:

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Attachments on bug 194422: 361472