Attachment 350085 Details for Bug 189694 – Patch

[patch] Patch

bug-189694-20180918185824.patch (text/plain), 36.88 KB, created by Justin Michaud on 2018-09-18 18:58:24 PDT

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Creator: Justin Michaud

Created: 2018-09-18 18:58:24 PDT

Size: 36.88 KB

patch

obsolete

>Subversion Revision: 236156
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index a54aa17bf287fe7ac5d6e69d503d77d4a658e452..6d351355db52efea119b67d7e8b62245c2090d2d 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,36 @@
>+2018-09-18  Justin Michaud  <justin_michaud@apple.com>
>+
>+        Implement CSS Custom Properties and Values Skeleton
>+        https://bugs.webkit.org/show_bug.cgi?id=189694
>+
>+        Add feature flag, CSS.registerProperty binding and registered property set in Document.h
>+        for the css custom properties and values api.
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Test: css-properties-values-api/registerProperty.html
>+
>+        * CMakeLists.txt:
>+        * DerivedSources.make:
>+        * Sources.txt:
>+        * WebCore.xcodeproj/project.pbxproj:
>+        * css/CSSRegisteredCustomProperty.h: Copied from Source/WebCore/css/DOMCSSNamespace.h.
>+        * css/DOMCSSCustomPropertyDescriptor.h: Copied from Source/WebCore/css/DOMCSSNamespace.h.
>+        * css/DOMCSSCustomPropertyDescriptor.idl: Added.
>+        * css/DOMCSSNamespace.h:
>+        * css/DOMCSSRegisterCustomProperty.cpp: Copied from Source/WebCore/css/DOMCSSNamespace.h.
>+        (WebCore::DOMCSSRegisterCustomProperty::registerProperty):
>+        (WebCore::DOMCSSRegisterCustomProperty::from):
>+        (WebCore::DOMCSSRegisterCustomProperty::supplementName):
>+        * css/DOMCSSRegisterCustomProperty.h: Copied from Source/WebCore/css/DOMCSSNamespace.h.
>+        * css/DOMCSSRegisterCustomProperty.idl: Copied from Source/WebCore/css/DOMCSSNamespace.h.
>+        * dom/Document.cpp:
>+        (WebCore::Document::registerCSSProperty):
>+        * dom/Document.h:
>+        * page/RuntimeEnabledFeatures.h:
>+        (WebCore::RuntimeEnabledFeatures::setCSSCustomPropertiesAndValuesEnabled):
>+        (WebCore::RuntimeEnabledFeatures::cssCustomPropertiesAndValuesEnabled const):
>+
> 2018-09-18  Basuke Suzuki  <Basuke.Suzuki@sony.com>
> 
>         [Curl] Limit capturing extra metrics for Web Inspector when not required.
>diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
>index d1d5ea25f010b902bd7acea9756f3a729e77cc83..66bc3663d4043d53dbb13c47d8ca0035f572c70e 100644
>--- a/Source/WebKit/ChangeLog
>+++ b/Source/WebKit/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-09-18  Justin Michaud  <justin_michaud@apple.com>
>+
>+        Implement CSS Custom Properties and Values Skeleton
>+        https://bugs.webkit.org/show_bug.cgi?id=189694
>+
>+        Add feature flag for CSS custom properties and values api
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * Shared/WebPreferences.yaml:
>+        * WebProcess/InjectedBundle/InjectedBundle.cpp:
>+        (WebKit::InjectedBundle::overrideBoolPreferenceForTestRunner):
>+
> 2018-09-18  Basuke Suzuki  <Basuke.Suzuki@sony.com>
> 
>         [Curl] Limit capturing extra metrics for Web Inspector when not required.
>diff --git a/Source/WebCore/CMakeLists.txt b/Source/WebCore/CMakeLists.txt
>index f7853e162bddc32630e0fc7d152d8aa34f91cf16..546fb78790b209ca39b5441e5443108dbaf757c9 100644
>--- a/Source/WebCore/CMakeLists.txt
>+++ b/Source/WebCore/CMakeLists.txt
>@@ -525,6 +525,9 @@ set(WebCore_NON_SVG_IDL_FILES
>     css/CSSStyleSheet.idl
>     css/CSSSupportsRule.idl
>     css/CSSUnknownRule.idl
>+    css/DOMCSSCustomPropertyDescriptor.idl
>+    css/DOMCSSNamespace.idl
>+    css/DOMCSSRegisterCustomProperty.idl
>     css/DOMMatrix.idl
>     css/DOMMatrix2DInit.idl
>     css/DOMMatrixInit.idl
>@@ -535,7 +538,6 @@ set(WebCore_NON_SVG_IDL_FILES
>     css/DeprecatedCSSOMRect.idl
>     css/DeprecatedCSSOMValue.idl
>     css/DeprecatedCSSOMValueList.idl
>-    css/DOMCSSNamespace.idl
>     css/ElementCSSInlineStyle.idl
>     css/FontFace.idl
>     css/FontFaceSet.idl
>diff --git a/Source/WebCore/DerivedSources.make b/Source/WebCore/DerivedSources.make
>index bb25ff9022da49845fcdc51098fd427b9bb13e6c..d420d46e48c0e6cf74cdfa0ba64d98dcf9a50e67 100644
>--- a/Source/WebCore/DerivedSources.make
>+++ b/Source/WebCore/DerivedSources.make
>@@ -451,7 +451,9 @@ JS_BINDING_IDLS = \
> 	$(WebCore)/css/DeprecatedCSSOMRect.idl \
> 	$(WebCore)/css/DeprecatedCSSOMValue.idl \
>     $(WebCore)/css/DeprecatedCSSOMValueList.idl \
>+    $(WebCore)/css/DOMCSSCustomPropertyDescriptor.idl \
>     $(WebCore)/css/DOMCSSNamespace.idl \
>+    $(WebCore)/css/DOMCSSRegisterCustomProperty.idl \
>     $(WebCore)/css/ElementCSSInlineStyle.idl \
>     $(WebCore)/css/FontFace.idl \
>     $(WebCore)/css/FontFaceSet.idl \
>diff --git a/Source/WebCore/Sources.txt b/Source/WebCore/Sources.txt
>index 30623545c80822ddeafb403ce2930c4dc805b76f..f66347f2175494aff6a006428320d9bef59dd0cb 100644
>--- a/Source/WebCore/Sources.txt
>+++ b/Source/WebCore/Sources.txt
>@@ -2513,6 +2513,8 @@ JSDocumentTimeline.cpp
> JSDocumentTimelineOptions.cpp
> JSDOMApplicationCache.cpp
> JSDOMCSSNamespace.cpp
>+JSDOMCSSRegisterCustomProperty.cpp
>+JSDOMCSSCustomPropertyDescriptor.cpp
> JSDOMCache.cpp
> JSDOMCacheStorage.cpp
> JSDOMException.cpp
>diff --git a/Source/WebCore/WebCore.xcodeproj/project.pbxproj b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>index 4e66e92712b4808faf29430e3cb8017a5b478980..738b9479fb4aabda42bc2b114c522142805489b4 100644
>--- a/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>+++ b/Source/WebCore/WebCore.xcodeproj/project.pbxproj
>@@ -1344,6 +1344,10 @@
> 		4B3480940EEF50D400AC1B41 /* ImageSourceCG.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B3480920EEF50D400AC1B41 /* ImageSourceCG.h */; };
> 		4B6FA6F40C39E48C00087011 /* SmartReplace.h in Headers */ = {isa = PBXBuildFile; fileRef = 4B6FA6F20C39E48C00087011 /* SmartReplace.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		4BAE95B10B2FA9CE00AED8A0 /* EditorDeleteAction.h in Headers */ = {isa = PBXBuildFile; fileRef = 4BAE95B00B2FA9CE00AED8A0 /* EditorDeleteAction.h */; settings = {ATTRIBUTES = (Private, ); }; };
>+		4BDA3FFD2151B6F500FD6604 /* DOMCSSRegisterCustomProperty.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4BDA3FF72151B6F100FD6604 /* DOMCSSRegisterCustomProperty.cpp */; };
>+		4BDA3FFE2151B6F500FD6604 /* DOMCSSCustomPropertyDescriptor.h in Headers */ = {isa = PBXBuildFile; fileRef = 4BDA3FF82151B6F200FD6604 /* DOMCSSCustomPropertyDescriptor.h */; };
>+		4BDA3FFF2151B6F500FD6604 /* DOMCSSRegisterCustomProperty.h in Headers */ = {isa = PBXBuildFile; fileRef = 4BDA3FF92151B6F300FD6604 /* DOMCSSRegisterCustomProperty.h */; };
>+		4BDA40012151B6F500FD6604 /* CSSRegisteredCustomProperty.h in Headers */ = {isa = PBXBuildFile; fileRef = 4BDA3FFB2151B6F400FD6604 /* CSSRegisteredCustomProperty.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		4E1959220A39DABA00220FE5 /* MediaFeatureNames.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E1959200A39DABA00220FE5 /* MediaFeatureNames.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		4E19592A0A39DACC00220FE5 /* MediaQuery.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E1959240A39DACC00220FE5 /* MediaQuery.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		4E19592C0A39DACC00220FE5 /* MediaQueryEvaluator.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E1959260A39DACC00220FE5 /* MediaQueryEvaluator.h */; settings = {ATTRIBUTES = (Private, ); }; };
>@@ -7840,6 +7844,12 @@
> 		4B6FA6F20C39E48C00087011 /* SmartReplace.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SmartReplace.h; sourceTree = "<group>"; };
> 		4B6FA6F60C39E4A100087011 /* SmartReplaceCF.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = SmartReplaceCF.cpp; sourceTree = "<group>"; };
> 		4BAE95B00B2FA9CE00AED8A0 /* EditorDeleteAction.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = EditorDeleteAction.h; sourceTree = "<group>"; };
>+		4BDA3FF52151B6F000FD6604 /* DOMCSSRegisterCustomProperty.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = DOMCSSRegisterCustomProperty.idl; sourceTree = "<group>"; };
>+		4BDA3FF72151B6F100FD6604 /* DOMCSSRegisterCustomProperty.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = DOMCSSRegisterCustomProperty.cpp; sourceTree = "<group>"; };
>+		4BDA3FF82151B6F200FD6604 /* DOMCSSCustomPropertyDescriptor.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DOMCSSCustomPropertyDescriptor.h; sourceTree = "<group>"; };
>+		4BDA3FF92151B6F300FD6604 /* DOMCSSRegisterCustomProperty.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DOMCSSRegisterCustomProperty.h; sourceTree = "<group>"; };
>+		4BDA3FFA2151B6F300FD6604 /* DOMCSSCustomPropertyDescriptor.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = DOMCSSCustomPropertyDescriptor.idl; sourceTree = "<group>"; };
>+		4BDA3FFB2151B6F400FD6604 /* CSSRegisteredCustomProperty.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CSSRegisteredCustomProperty.h; sourceTree = "<group>"; };
> 		4E19591F0A39DABA00220FE5 /* MediaFeatureNames.cpp */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; path = MediaFeatureNames.cpp; sourceTree = "<group>"; };
> 		4E1959200A39DABA00220FE5 /* MediaFeatureNames.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; path = MediaFeatureNames.h; sourceTree = "<group>"; };
> 		4E1959230A39DACC00220FE5 /* MediaQuery.cpp */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.cpp.cpp; path = MediaQuery.cpp; sourceTree = "<group>"; };
>@@ -23951,8 +23961,8 @@
> 				2D0B4AA918DA1CCD00434DE1 /* IOSurface.h */,
> 				2D0B4AAA18DA1CCD00434DE1 /* IOSurface.mm */,
> 				AD9FF6E01908391D003B61E0 /* IOSurfacePoolCocoa.mm */,
>-				CDC48AC72149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h */,
> 				CDC48AC82149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.cpp */,
>+				CDC48AC72149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h */,
> 				526724F21CB2FDF60075974D /* TextTrackRepresentationCocoa.h */,
> 				526724F11CB2FDF60075974D /* TextTrackRepresentationCocoa.mm */,
> 				2D3EF4441917915C00034184 /* WebActionDisablingCALayerDelegate.h */,
>@@ -24730,8 +24740,8 @@
> 		CD669D651D232DF4004D1866 /* cocoa */ = {
> 			isa = PBXGroup;
> 			children = (
>-				417F7AEA2139BF6400FBA7EC /* MediaSessionManagerCocoa.mm */,
> 				417F7AED2139BF6500FBA7EC /* MediaSessionManagerCocoa.h */,
>+				417F7AEA2139BF6400FBA7EC /* MediaSessionManagerCocoa.mm */,
> 				417F7AEB2139BF6400FBA7EC /* WebAudioBufferList.cpp */,
> 				417F7AEC2139BF6500FBA7EC /* WebAudioBufferList.h */,
> 			);
>@@ -25677,6 +25687,7 @@
> 				9362640A0DE1137D009D5A00 /* CSSReflectionDirection.h */,
> 				BC5A12DD0DC0414800C9AFAD /* CSSReflectValue.cpp */,
> 				BC5A12DE0DC0414800C9AFAD /* CSSReflectValue.h */,
>+				4BDA3FFB2151B6F400FD6604 /* CSSRegisteredCustomProperty.h */,
> 				BC7D8FF11BD1A47900FFE540 /* CSSRevertValue.cpp */,
> 				BC7D8FF21BD1A47900FFE540 /* CSSRevertValue.h */,
> 				A80E6CDC0A1989CA007FB8C5 /* CSSRule.cpp */,
>@@ -25746,9 +25757,14 @@
> 				A8D0651C0A23C1FE005E7203 /* DeprecatedCSSOMValueList.idl */,
> 				4A4F48A716B0DFC000EDBB29 /* DocumentRuleSets.cpp */,
> 				4A4F48A816B0DFC000EDBB29 /* DocumentRuleSets.h */,
>+				4BDA3FF82151B6F200FD6604 /* DOMCSSCustomPropertyDescriptor.h */,
>+				4BDA3FFA2151B6F300FD6604 /* DOMCSSCustomPropertyDescriptor.idl */,
> 				FD677735195CAB200072E0D3 /* DOMCSSNamespace.cpp */,
> 				FC9A0F72164094CF003D6B8D /* DOMCSSNamespace.h */,
> 				FC9A0F73164094CF003D6B8D /* DOMCSSNamespace.idl */,
>+				4BDA3FF72151B6F100FD6604 /* DOMCSSRegisterCustomProperty.cpp */,
>+				4BDA3FF92151B6F300FD6604 /* DOMCSSRegisterCustomProperty.h */,
>+				4BDA3FF52151B6F000FD6604 /* DOMCSSRegisterCustomProperty.idl */,
> 				836ACEC41ECA6654004BD012 /* DOMMatrix.cpp */,
> 				836ACEC51ECA6654004BD012 /* DOMMatrix.h */,
> 				836ACEC61ECA6654004BD012 /* DOMMatrix.idl */,
>@@ -27671,6 +27687,7 @@
> 				FE271F672082DBE500A952D4 /* CSSPtrTag.h in Headers */,
> 				9362640B0DE1137D009D5A00 /* CSSReflectionDirection.h in Headers */,
> 				BC5A12E00DC0414800C9AFAD /* CSSReflectValue.h in Headers */,
>+				4BDA40012151B6F500FD6604 /* CSSRegisteredCustomProperty.h in Headers */,
> 				BC7D8FF41BD1A47900FFE540 /* CSSRevertValue.h in Headers */,
> 				A80E6D0D0A1989CA007FB8C5 /* CSSRule.h in Headers */,
> 				A80E6CF20A1989CA007FB8C5 /* CSSRuleList.h in Headers */,
>@@ -27830,7 +27847,9 @@
> 				41380C271F3436AC00155FDA /* DOMCache.h in Headers */,
> 				41FABD2D1F4DFE4A006A6C97 /* DOMCacheEngine.h in Headers */,
> 				41380C291F3436AC00155FDA /* DOMCacheStorage.h in Headers */,
>+				4BDA3FFE2151B6F500FD6604 /* DOMCSSCustomPropertyDescriptor.h in Headers */,
> 				FC9A0F75164094CF003D6B8D /* DOMCSSNamespace.h in Headers */,
>+				4BDA3FFF2151B6F500FD6604 /* DOMCSSRegisterCustomProperty.h in Headers */,
> 				7AABA25A14BC613300AA9A11 /* DOMEditor.h in Headers */,
> 				BC60D6E90D28D83400B9918F /* DOMException.h in Headers */,
> 				8399470C1F50B63E00E9D86B /* DOMFileSystem.h in Headers */,
>@@ -29472,6 +29491,7 @@
> 				2D9BF7061DBFBB24007A7D99 /* MediaEncryptedEvent.h in Headers */,
> 				2D9BF7081DBFBB24007A7D99 /* MediaEncryptedEventInit.h in Headers */,
> 				41B28B151F8501D300FB52AC /* MediaEndpointConfiguration.h in Headers */,
>+				CDC48AC92149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h in Headers */,
> 				E44613AD0CD6331000FADA75 /* MediaError.h in Headers */,
> 				4E1959220A39DABA00220FE5 /* MediaFeatureNames.h in Headers */,
> 				07A6D1EC1491137700051D0C /* MediaFragmentURIParser.h in Headers */,
>@@ -30286,7 +30306,6 @@
> 				517A534F1F54A8BA00DCDC0A /* ServiceWorkerRegistrationData.h in Headers */,
> 				517A53291F4B90B900DCDC0A /* ServiceWorkerRegistrationKey.h in Headers */,
> 				51F175691F3EBC8300C74950 /* ServiceWorkerRegistrationOptions.h in Headers */,
>-				CDC48AC92149CF2A0024FD59 /* MediaEngineConfigurationFactoryCocoa.h in Headers */,
> 				51BCCE301F8F179E006BA0ED /* ServiceWorkerThread.h in Headers */,
> 				4112B5431F9F9CA000E67875 /* ServiceWorkerThreadProxy.h in Headers */,
> 				515E37F61FAA940200D7F22A /* ServiceWorkerTypes.h in Headers */,
>@@ -31546,6 +31565,7 @@
> 				1ABA76CA11D20E50004C201C /* CSSPropertyNames.cpp in Sources */,
> 				BE23480C18A9870B00E4B6E8 /* DataCue.cpp in Sources */,
> 				E58B45BB20AD07DD00991025 /* DataListButtonElement.cpp in Sources */,
>+				4BDA3FFD2151B6F500FD6604 /* DOMCSSRegisterCustomProperty.cpp in Sources */,
> 				515BE18F1D54F5FB00DD7C68 /* EmptyGamepadProvider.cpp in Sources */,
> 				724ED32C1A3A7E5400F5F13C /* EXTBlendMinMax.cpp in Sources */,
> 				72F1ADA21A3904DC00014E18 /* EXTFragDepth.cpp in Sources */,
>diff --git a/Source/WebCore/css/CSSRegisteredCustomProperty.h b/Source/WebCore/css/CSSRegisteredCustomProperty.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..83a3a842ac3abf0b3695e7f1208485f1c5b91176
>--- /dev/null
>+++ b/Source/WebCore/css/CSSRegisteredCustomProperty.h
>@@ -0,0 +1,41 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions are
>+ * met:
>+ *
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above
>+ *    copyright notice, this list of conditions and the following disclaimer in
>+ *    the documentation and/or other materials provided with the distribution.
>+ * 3. Neither the name of Motorola Mobility Inc. nor the names of its
>+ *    contributors may be used to endorse or promote products derived from this
>+ *    software without specific prior written permission.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
>+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
>+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
>+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
>+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
>+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
>+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
>+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+#include <wtf/text/WTFString.h>
>+
>+namespace WebCore {
>+
>+struct CSSRegisteredCustomProperty {
>+    String name;
>+    /* TODO syntax, inherits, initialValue */
>+};
>+
>+}
>diff --git a/Source/WebCore/css/DOMCSSCustomPropertyDescriptor.h b/Source/WebCore/css/DOMCSSCustomPropertyDescriptor.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..345c8dead3e11b9aa2071c9c6bd6080fdb6767de
>--- /dev/null
>+++ b/Source/WebCore/css/DOMCSSCustomPropertyDescriptor.h
>@@ -0,0 +1,41 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions are
>+ * met:
>+ *
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above
>+ *    copyright notice, this list of conditions and the following disclaimer in
>+ *    the documentation and/or other materials provided with the distribution.
>+ * 3. Neither the name of Motorola Mobility Inc. nor the names of its
>+ *    contributors may be used to endorse or promote products derived from this
>+ *    software without specific prior written permission.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
>+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
>+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
>+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
>+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
>+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
>+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
>+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+namespace WebCore {
>+
>+struct DOMCSSCustomPropertyDescriptor {
>+    String name;
>+    String syntax { "*" };
>+    bool inherits;
>+    String initialValue;
>+};
>+
>+}
>diff --git a/Source/WebCore/css/DOMCSSCustomPropertyDescriptor.idl b/Source/WebCore/css/DOMCSSCustomPropertyDescriptor.idl
>new file mode 100644
>index 0000000000000000000000000000000000000000..d834193f97693b368929dd1dff048d5a59fc7524
>--- /dev/null
>+++ b/Source/WebCore/css/DOMCSSCustomPropertyDescriptor.idl
>@@ -0,0 +1,38 @@
>+/*
>+* Copyright (C) 2018 Apple Inc. All rights reserved.
>+*
>+* Redistribution and use in source and binary forms, with or without
>+* modification, are permitted provided that the following conditions are
>+* met:
>+*
>+* 1. Redistributions of source code must retain the above copyright
>+*    notice, this list of conditions and the following disclaimer.
>+* 2. Redistributions in binary form must reproduce the above
>+*    copyright notice, this list of conditions and the following disclaimer in
>+*    the documentation and/or other materials provided with the distribution.
>+* 3. Neither the name of Motorola Mobility Inc. nor the names of its
>+*    contributors may be used to endorse or promote products derived from this
>+*    software without specific prior written permission.
>+*
>+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
>+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
>+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
>+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
>+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
>+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
>+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
>+* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+*/
>+
>+[
>+    JSGenerateToJSObject,
>+    EnabledAtRuntime=CSSCustomPropertiesAndValues
>+] dictionary DOMCSSCustomPropertyDescriptor {
>+    required DOMString name;
>+             DOMString syntax       = "*";
>+    required boolean   inherits;
>+             DOMString initialValue;
>+};
>diff --git a/Source/WebCore/css/DOMCSSNamespace.h b/Source/WebCore/css/DOMCSSNamespace.h
>index 3b2e3870d25f811018c426ce6f80435e93db01ac..8cd28a20bc56f3cd485dd9affcbf2e2ab1d561f2 100644
>--- a/Source/WebCore/css/DOMCSSNamespace.h
>+++ b/Source/WebCore/css/DOMCSSNamespace.h
>@@ -29,6 +29,8 @@
> 
> #pragma once
> 
>+#include "Supplementable.h"
>+
> #include <wtf/Forward.h>
> #include <wtf/RefCounted.h>
> 
>@@ -36,7 +38,7 @@ namespace WebCore {
> 
> class Document;
> 
>-class DOMCSSNamespace final : public RefCounted<DOMCSSNamespace> {
>+class DOMCSSNamespace final : public RefCounted<DOMCSSNamespace>, public Supplementable<DOMCSSNamespace> {
> public:
>     static bool supports(Document&, const String& property, const String& value);
>     static bool supports(Document&, const String& conditionText);
>diff --git a/Source/WebCore/css/DOMCSSRegisterCustomProperty.cpp b/Source/WebCore/css/DOMCSSRegisterCustomProperty.cpp
>new file mode 100644
>index 0000000000000000000000000000000000000000..a0d887279078411f44117d8c84bc29c565b2b3d6
>--- /dev/null
>+++ b/Source/WebCore/css/DOMCSSRegisterCustomProperty.cpp
>@@ -0,0 +1,65 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions are
>+ * met:
>+ *
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above
>+ *    copyright notice, this list of conditions and the following disclaimer in
>+ *    the documentation and/or other materials provided with the distribution.
>+ * 3. Neither the name of Motorola Mobility Inc. nor the names of its
>+ *    contributors may be used to endorse or promote products derived from this
>+ *    software without specific prior written permission.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
>+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
>+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
>+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
>+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
>+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
>+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
>+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#include "config.h"
>+#include "DOMCSSRegisterCustomProperty.h"
>+
>+#include "CSSRegisteredCustomProperty.h"
>+#include "DOMCSSNamespace.h"
>+#include "Document.h"
>+#include <wtf/text/WTFString.h>
>+
>+namespace WebCore {
>+
>+void DOMCSSRegisterCustomProperty::registerProperty(Document& document, const DOMCSSCustomPropertyDescriptor& descriptor)
>+{
>+    CSSRegisteredCustomProperty property { descriptor.name };
>+    if (!document.registerCSSProperty(property)) {
>+        /* TODO throw JS exception */
>+        return;
>+    }
>+}
>+
>+DOMCSSRegisterCustomProperty* DOMCSSRegisterCustomProperty::from(DOMCSSNamespace& css)
>+{
>+    auto* supplement = static_cast<DOMCSSRegisterCustomProperty*>(Supplement<DOMCSSNamespace>::from(&css, supplementName()));
>+    if (!supplement) {
>+        auto newSupplement = std::make_unique<DOMCSSRegisterCustomProperty>(css);
>+        supplement = newSupplement.get();
>+        provideTo(&css, supplementName(), WTFMove(newSupplement));
>+    }
>+    return supplement;
>+}
>+
>+const char* DOMCSSRegisterCustomProperty::supplementName()
>+{
>+    return "DOMCSSRegisterCustomProperty";
>+}
>+
>+}
>diff --git a/Source/WebCore/css/DOMCSSRegisterCustomProperty.h b/Source/WebCore/css/DOMCSSRegisterCustomProperty.h
>new file mode 100644
>index 0000000000000000000000000000000000000000..0929b0cd778c8096c6a9ff32a650cecb1cae2f41
>--- /dev/null
>+++ b/Source/WebCore/css/DOMCSSRegisterCustomProperty.h
>@@ -0,0 +1,51 @@
>+/*
>+ * Copyright (C) 2012 Motorola Mobility Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions are
>+ * met:
>+ *
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above
>+ *    copyright notice, this list of conditions and the following disclaimer in
>+ *    the documentation and/or other materials provided with the distribution.
>+ * 3. Neither the name of Motorola Mobility Inc. nor the names of its
>+ *    contributors may be used to endorse or promote products derived from this
>+ *    software without specific prior written permission.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
>+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
>+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
>+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
>+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
>+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
>+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
>+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+#include "DOMCSSCustomPropertyDescriptor.h"
>+#include "Supplementable.h"
>+
>+namespace WebCore {
>+
>+class Document;
>+class DOMCSSNamespace;
>+
>+class DOMCSSRegisterCustomProperty final : public Supplement<DOMCSSNamespace> {
>+public:
>+    explicit DOMCSSRegisterCustomProperty(DOMCSSNamespace&) { }
>+
>+    static void registerProperty(Document&, const DOMCSSCustomPropertyDescriptor&);
>+
>+private:
>+    static DOMCSSRegisterCustomProperty* from(DOMCSSNamespace&);
>+    static const char* supplementName();
>+};
>+
>+}
>diff --git a/Source/WebCore/css/DOMCSSRegisterCustomProperty.idl b/Source/WebCore/css/DOMCSSRegisterCustomProperty.idl
>new file mode 100644
>index 0000000000000000000000000000000000000000..3dbe082e5efb4321e8fcb830bb7cfc69f2e4ad1b
>--- /dev/null
>+++ b/Source/WebCore/css/DOMCSSRegisterCustomProperty.idl
>@@ -0,0 +1,34 @@
>+/*
>+ * Copyright (C) 2012 Motorola Mobility Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions are
>+ * met:
>+ *
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above
>+ *    copyright notice, this list of conditions and the following disclaimer in
>+ *    the documentation and/or other materials provided with the distribution.
>+ * 3. Neither the name of Motorola Mobility Inc. nor the names of its
>+ *    contributors may be used to endorse or promote products derived from this
>+ *    software without specific prior written permission.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
>+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
>+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
>+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
>+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
>+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
>+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
>+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
>+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
>+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+[
>+    EnabledAtRuntime=CSSCustomPropertiesAndValues
>+] partial interface DOMCSSNamespace {
>+    [CallWith=Document] static void registerProperty(DOMCSSCustomPropertyDescriptor descriptor);
>+};
>diff --git a/Source/WebCore/dom/Document.cpp b/Source/WebCore/dom/Document.cpp
>index 51f660e21666cb72cb9914aad9385da2d9afbc61..cf2cd3337bacdaf4fce9cd3812869b8f074c8467 100644
>--- a/Source/WebCore/dom/Document.cpp
>+++ b/Source/WebCore/dom/Document.cpp
>@@ -8216,4 +8216,9 @@ String Document::signedPublicKeyAndChallengeString(unsigned keySizeIndex, const
>     return page->chrome().client().signedPublicKeyAndChallengeString(keySizeIndex, challengeString, url);
> }
> 
>+bool Document::registerCSSProperty(const CSSRegisteredCustomProperty& prop)
>+{
>+    return m_CSSRegisteredPropertySet.add(prop.name, prop).isNewEntry;
>+}
>+
> } // namespace WebCore
>diff --git a/Source/WebCore/dom/Document.h b/Source/WebCore/dom/Document.h
>index cd1a9630fc494d1c44423e238d8ebe687dacf15a..3d6bb9809405a2f7a2439096dfd569bcfb95c069 100644
>--- a/Source/WebCore/dom/Document.h
>+++ b/Source/WebCore/dom/Document.h
>@@ -27,6 +27,7 @@
> 
> #pragma once
> 
>+#include "CSSRegisteredCustomProperty.h"
> #include "Color.h"
> #include "ContainerNode.h"
> #include "DisabledAdaptations.h"
>@@ -1491,6 +1492,8 @@ public:
>     void updateMainArticleElementAfterLayout();
>     bool hasMainArticleElement() const { return !!m_mainArticleElement; }
> 
>+    bool registerCSSProperty(const CSSRegisteredCustomProperty&);
>+
>     void setAsRunningUserScripts() { m_isRunningUserScripts = true; }
>     bool isRunningUserScripts() const { return m_isRunningUserScripts; }
> 
>@@ -2023,6 +2026,8 @@ private:
>     
>     std::unique_ptr<UserGestureIndicator> m_temporaryUserGesture;
> 
>+    HashMap<String, CSSRegisteredCustomProperty> m_CSSRegisteredPropertySet;
>+
>     bool m_isRunningUserScripts { false };
> };
> 
>diff --git a/Source/WebCore/page/RuntimeEnabledFeatures.h b/Source/WebCore/page/RuntimeEnabledFeatures.h
>index 47705649d8596d345e4540ab816a82e12447b1b0..e163678afeb0a9010fe55c19e1c26161c057ff15 100644
>--- a/Source/WebCore/page/RuntimeEnabledFeatures.h
>+++ b/Source/WebCore/page/RuntimeEnabledFeatures.h
>@@ -285,6 +285,9 @@ public:
>     void setWebAPIStatisticsEnabled(bool isEnabled) { m_webAPIStatisticsEnabled = isEnabled; }
>     bool webAPIStatisticsEnabled() const { return m_webAPIStatisticsEnabled; }
> 
>+    void setCSSCustomPropertiesAndValuesEnabled(bool isEnabled) { m_CSSCustomPropertiesAndValuesEnabled = isEnabled; }
>+    bool cssCustomPropertiesAndValuesEnabled() const { return m_CSSCustomPropertiesAndValuesEnabled; }
>+
>     WEBCORE_EXPORT static RuntimeEnabledFeatures& sharedFeatures();
> 
> private:
>@@ -430,6 +433,8 @@ private:
> 
>     bool m_webAPIStatisticsEnabled { false };
> 
>+    bool m_CSSCustomPropertiesAndValuesEnabled { false };
>+
>     friend class WTF::NeverDestroyed<RuntimeEnabledFeatures>;
> };
> 
>diff --git a/Source/WebKit/Shared/WebPreferences.yaml b/Source/WebKit/Shared/WebPreferences.yaml
>index 66f61586a9157f6d99461502a9a0ec4d48eb00ea..d3a861876bda98d761dceedffc8b6bdfef69cfe7 100644
>--- a/Source/WebKit/Shared/WebPreferences.yaml
>+++ b/Source/WebKit/Shared/WebPreferences.yaml
>@@ -1350,3 +1350,11 @@ WebAPIStatisticsEnabled:
>   humanReadableDescription: "Enable Web API Statistics"
>   webcoreBinding: RuntimeEnabledFeatures
>   category: internal
>+
>+CSSCustomPropertiesAndValuesEnabled:
>+  type: bool
>+  defaultValue: false
>+  humanReadableName: "CSS Custom Properties and Values API"
>+  humanReadableDescription: "Enable CSS Custom Properties and Values API"
>+  webcoreBinding: RuntimeEnabledFeatures
>+  category: experimental
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundle.cpp b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundle.cpp
>index 8d681fe478513abef8609d03f27b5736ab4a38e0..625ec12ec8987021a49f6bff0220634df0048c07 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundle.cpp
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundle.cpp
>@@ -253,6 +253,9 @@ void InjectedBundle::overrideBoolPreferenceForTestRunner(WebPageGroupProxy* page
>     if (preference == "WebKitWebAPIStatisticsEnabled")
>         RuntimeEnabledFeatures::sharedFeatures().setWebAPIStatisticsEnabled(enabled);
> 
>+    if (preference == "CSSCustomPropertiesAndValuesEnabled")
>+        RuntimeEnabledFeatures::sharedFeatures().setCSSCustomPropertiesAndValuesEnabled(enabled);
>+
>     // Map the names used in LayoutTests with the names used in WebCore::Settings and WebPreferencesStore.
> #define FOR_EACH_OVERRIDE_BOOL_PREFERENCE(macro) \
>     macro(WebKitJavaEnabled, JavaEnabled, javaEnabled) \
>diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
>index 1d0e183b393d22e1018e9540603bde231286656d..23651b47fab39ae1ee16b85f5c51b617e6e51641 100644
>--- a/LayoutTests/ChangeLog
>+++ b/LayoutTests/ChangeLog
>@@ -1,3 +1,15 @@
>+2018-09-18  Justin Michaud  <justin_michaud@apple.com>
>+
>+        Implement CSS Custom Properties and Values Skeleton
>+        https://bugs.webkit.org/show_bug.cgi?id=189694
>+
>+        Add test to check that the CSS.registerProperty method exists
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * css-custom-properties-api/registerProperty-expected.txt: Added.
>+        * css-custom-properties-api/registerProperty.html: Added.
>+
> 2018-09-18  Megan Gardner  <megan_gardner@apple.com>
> 
>         Support Images Module Level 4's double-position gradient color stop syntax
>diff --git a/LayoutTests/css-custom-properties-api/registerProperty-expected.txt b/LayoutTests/css-custom-properties-api/registerProperty-expected.txt
>new file mode 100644
>index 0000000000000000000000000000000000000000..cfcfecec4f370e63e83cf3a9e429798ce1b566b2
>--- /dev/null
>+++ b/LayoutTests/css-custom-properties-api/registerProperty-expected.txt
>@@ -0,0 +1,5 @@
>+
>+PASS registerProperty requires a Dictionary type 
>+PASS registerProperty requires a name matching <custom-property-name> 
>+PASS registerProperty only allows omitting initialValue is syntax is '*' 
>+
>diff --git a/LayoutTests/css-custom-properties-api/registerProperty.html b/LayoutTests/css-custom-properties-api/registerProperty.html
>new file mode 100644
>index 0000000000000000000000000000000000000000..d6e4e5c2d5a210d8749d2fc25581fe1bc163bbb4
>--- /dev/null
>+++ b/LayoutTests/css-custom-properties-api/registerProperty.html
>@@ -0,0 +1,33 @@
>+<!DOCTYPE html>
>+
>+<script src="../resources/testharness.js"></script>
>+<script src="../resources/testharnessreport.js"></script>
>+<script>
>+// Tests for error checking during property registration
>+test(function() {
>+    assert_throws(new TypeError(), () => CSS.registerProperty());
>+    assert_throws(new TypeError(), () => CSS.registerProperty(undefined));
>+    assert_throws(new TypeError(), () => CSS.registerProperty(true));
>+    assert_throws(new TypeError(), () => CSS.registerProperty(2));
>+    assert_throws(new TypeError(), () => CSS.registerProperty("css"));
>+    assert_throws(new TypeError(), () => CSS.registerProperty(null));
>+}, "registerProperty requires a Dictionary type");
>+test(function() {
>+    // Valid property names, shouldn't throw
>+    CSS.registerProperty({name: '--name1', inherits: false});
>+    CSS.registerProperty({name: '--name2, no need for escapes', inherits: false});
>+    CSS.registerProperty({name: ['--name', 3], inherits: false});
>+    // Invalid property names
>+    assert_throws(new TypeError(), () => CSS.registerProperty({}));
>+    assert_throws(new TypeError(), () => CSS.registerProperty({name: '--no-inherits'}));
>+    //assert_throws(new SyntaxError(), () => CSS.registerProperty({name: 'no-leading-dash', inherits: false}));
>+    //assert_throws(new SyntaxError(), () => CSS.registerProperty({name: '', inherits: false}));
>+    //assert_throws(new SyntaxError(), () => CSS.registerProperty({name: '\\--name', inherits: false}));
>+}, "registerProperty requires a name matching <custom-property-name>");
>+test(function() {
>+    CSS.registerProperty({name: '--syntax-test-1', inherits: false, syntax: '*'});
>+    CSS.registerProperty({name: '--syntax-test-2', inherits: false, syntax: ' * '});
>+    /*assert_throws(new SyntaxError(),
>+        () => CSS.registerProperty({name: '--syntax-test-3', syntax: 'length'}));*/
>+}, "registerProperty only allows omitting initialValue is syntax is '*'");
>+</script>

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Attachments on bug 189694: 350009 | 350011 | 350085 | 350089 | 350118 | 350120 | 350141 | 350153 | 350231