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 f4dde91bc66cfa5eeb3d63829d4c88b650d736c3..f57ba7e7c0fe5070c9fdce9b155abc7351a32756 100644
--- a/Source/core/core.gypi
+++ b/Source/core/core.gypi
@@ -900,6 +900,7 @@
             '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',
@@ -3338,8 +3339,9 @@
             'css/RuleSetTest.cpp',
             'css/invalidation/DescendantInvalidationSetTest.cpp',
             'css/parser/BisonCSSParserTest.cpp',
-            'css/parser/MediaQueryTokenizerTest.cpp',
             'css/parser/MediaConditionTest.cpp',
+            'css/parser/MediaQueryTokenizerTest.cpp',
+            'css/parser/SizesAttributeParserTest.cpp',
             'css/resolver/FontBuilderTest.cpp',
             'dom/ActiveDOMObjectTest.cpp',
             'dom/DOMImplementationTest.cpp',