CSSValue Immediates: Change CSSValue to an object instead of a pointer

Source/core/core.gypi

Index: Source/core/core.gypi
diff --git a/Source/core/core.gypi b/Source/core/core.gypi
index 87b6874931390b590c550de029ff5a5ee95b2f4f..31a784876925812a39023f98722267ac83b03f7c 100644
--- a/Source/core/core.gypi
+++ b/Source/core/core.gypi
@@ -1124,8 +1124,8 @@
             'css/CSSUnicodeRangeValue.h',
             'css/CSSUnsetValue.cpp',
             'css/CSSUnsetValue.h',
-            'css/CSSValue.cpp',
             'css/CSSValueList.cpp',
+            'css/CSSValueObject.cpp',
             'css/CSSValuePool.cpp',
             'css/CSSValuePool.h',
             'css/CSSViewportRule.cpp',
@@ -3827,15 +3827,15 @@
             'css/CSSSelectorTest.cpp',
             'css/CSSTestHelper.cpp',
             'css/CSSTestHelper.h',
+            'css/CSSValueTest.cpp',
             'css/CSSValueTestHelper.h',
             'css/DragUpdateTest.cpp',
+            'css/invalidation/DescendantInvalidationSetTest.cpp',
             'css/MediaQueryEvaluatorTest.cpp',
             'css/MediaQueryListTest.cpp',
             'css/MediaQueryMatcherTest.cpp',
             'css/MediaQuerySetTest.cpp',
             'css/MediaValuesTest.cpp',
-            'css/RuleSetTest.cpp',
-            'css/invalidation/DescendantInvalidationSetTest.cpp',
             'css/parser/CSSParserValuesTest.cpp',
             'css/parser/CSSPropertyParserTest.cpp',
             'css/parser/CSSSelectorParserTest.cpp',
@@ -3844,6 +3844,7 @@
             'css/parser/SizesAttributeParserTest.cpp',
             'css/parser/SizesCalcParserTest.cpp',
             'css/resolver/FontBuilderTest.cpp',
+            'css/RuleSetTest.cpp',
             'dom/ActiveDOMObjectTest.cpp',
             'dom/AttrTest.cpp',
             'dom/CrossThreadTaskTest.cpp',