A sizes attribute parser

Source/core/core.gypi

Index: Source/core/core.gypi
diff --git a/Source/core/core.gypi b/Source/core/core.gypi
index 8a04cb846931e0017b81fef26d94c56bc74d5b29..58db5ade24d40d0a59e6fb927e2284432cf1fcea 100644
--- a/Source/core/core.gypi
+++ b/Source/core/core.gypi
@@ -844,6 +844,8 @@
             'css/MediaQueryMatcher.cpp',
             'css/MediaQueryMatcher.h',
             'css/MediaValues.cpp',
+            'css/MediaValuesCached.cpp',
+            'css/MediaValuesDynamic.cpp',
             'css/PageRuleCollector.cpp',
             'css/PageRuleCollector.h',
             'css/Pair.cpp',
@@ -903,6 +905,7 @@
             'css/parser/MediaQueryParser.cpp',
             'css/parser/MediaQueryToken.cpp',
             'css/parser/MediaQueryTokenizer.cpp',
+            'css/parser/SizesAttributeParser.cpp',
             'css/resolver/AnimatedStyleBuilder.cpp',
             'css/resolver/AnimatedStyleBuilder.h',
             'css/resolver/CSSToStyleMap.cpp',
@@ -3346,6 +3349,7 @@
             'css/invalidation/DescendantInvalidationSetTest.cpp',
             'css/parser/BisonCSSParserTest.cpp',
             'css/parser/MediaQueryTokenizerTest.cpp',
+            'css/parser/SizesAttributeParserTest.cpp',
             'css/parser/MediaConditionTest.cpp',
             'css/resolver/FontBuilderTest.cpp',
             'dom/ActiveDOMObjectTest.cpp',