CSS Custom Properties (Variables)

Source/core/core.gypi

 {
     'includes': [
         'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/KeyframeEffect.idl',
             'animation/EffectModel.idl',
             'animation/AnimationEffectReadOnly.idl',
@@ skipping 1126 matching lines @@
             'css/CSSToLengthConversionData.cpp',
             'css/CSSToLengthConversionData.h',
             'css/CSSUnicodeRangeValue.cpp',
             'css/CSSUnicodeRangeValue.h',
             'css/CSSUnsetValue.cpp',
             'css/CSSUnsetValue.h',
             'css/CSSValue.cpp',
             'css/CSSValueList.cpp',
             'css/CSSValuePool.cpp',
             'css/CSSValuePool.h',
+            'css/CSSVariableData.cpp',
+            'css/CSSVariableData.h',
             'css/CSSViewportRule.cpp',
             'css/CSSViewportRule.h',
             'css/Counter.cpp',
             'css/Counter.h',
             'css/DOMWindowCSS.cpp',
             'css/DOMWindowCSS.h',
             'css/DocumentFontFaceSet.cpp',
             'css/DocumentFontFaceSet.h',
             'css/ElementRuleCollector.cpp',
             'css/ElementRuleCollector.h',
@@ skipping 97 matching lines @@
             'css/parser/CSSParserTokenRange.h',
             'css/parser/CSSParserValues.cpp',
             'css/parser/CSSPropertyParser.cpp',
             'css/parser/CSSPropertyParser.h',
             'css/parser/CSSSelectorParser.cpp',
             'css/parser/CSSSelectorParser.h',
             'css/parser/CSSSupportsParser.cpp',
             'css/parser/CSSSupportsParser.h',
             'css/parser/CSSTokenizer.cpp',
             'css/parser/CSSTokenizerInputStream.cpp',
+            'css/parser/CSSVariableParser.cpp',
+            'css/parser/CSSVariableParser.h',
             'css/parser/MediaQueryBlockWatcher.cpp',
             'css/parser/MediaQueryParser.cpp',
             'css/parser/SizesAttributeParser.cpp',
             'css/parser/SizesCalcParser.cpp',
             'css/resolver/AnimatedStyleBuilder.cpp',
             'css/resolver/AnimatedStyleBuilder.h',
             'css/resolver/CSSToStyleMap.cpp',
             'css/resolver/CSSToStyleMap.h',
+            'css/resolver/CSSVariableResolver.cpp',
+            'css/resolver/CSSVariableResolver.h',
             'css/resolver/ElementResolveContext.cpp',
             'css/resolver/ElementResolveContext.h',
             'css/resolver/ElementStyleResources.cpp',
             'css/resolver/ElementStyleResources.h',
             'css/resolver/FilterOperationResolver.cpp',
             'css/resolver/FilterOperationResolver.h',
             'css/resolver/FontBuilder.cpp',
             'css/resolver/FontBuilder.h',
             'css/resolver/MatchRequest.h',
             'css/resolver/MatchResult.cpp',
@@ skipping 2684 matching lines @@
             'style/OutlineValueTest.cpp',
             'style/SVGComputedStyleTest.cpp',
             'svg/UnsafeSVGAttributeSanitizationTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }