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 e68c4b698dd992eea79cdb4f9e7046500db452f4..5d7fc9907c8588766fb3b0aa66015a69bf9eb5ac 100644
--- a/Source/core/core.gypi
+++ b/Source/core/core.gypi
@@ -845,6 +845,8 @@
             'css/MediaQueryMatcher.cpp',
             'css/MediaQueryMatcher.h',
             'css/MediaValues.cpp',
+            'css/MediaValuesCached.cpp',
+            'css/MediaValuesDynamic.cpp',
             'css/PageRuleCollector.cpp',
             'css/PageRuleCollector.h',
             'css/Pair.cpp',
@@ -904,6 +906,7 @@
             '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',
@@ -3349,6 +3352,7 @@
             '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',