Split out String, URI and CustomIdent from CSSPrimitiveValue

Source/core/css/parser/CSSPropertyParser.h

Index: Source/core/css/parser/CSSPropertyParser.h
diff --git a/Source/core/css/parser/CSSPropertyParser.h b/Source/core/css/parser/CSSPropertyParser.h
index c4ec195c72c03647d77b8f36418d0f4d3c63cf4c..1e459e4dde75a7085732c03b6ddd9910421caabb 100644
--- a/Source/core/css/parser/CSSPropertyParser.h
+++ b/Source/core/css/parser/CSSPropertyParser.h
@@ -26,6 +26,7 @@
 #include "core/css/CSSGradientValue.h"
 #include "core/css/CSSGridTemplateAreasValue.h"
 #include "core/css/CSSPropertySourceData.h"
+#include "core/css/CSSStringValue.h"
 #include "platform/Length.h"
 
 namespace blink {
@@ -150,7 +151,7 @@ private:
     bool parseColumnsShorthand(bool important);
 
     PassRefPtrWillBeRawPtr<CSSValue> parseGridPosition();
-    bool parseIntegerOrCustomIdentFromGridPosition(RefPtrWillBeRawPtr<CSSPrimitiveValue>& numericValue, RefPtrWillBeRawPtr<CSSPrimitiveValue>& gridLineName);
+    bool parseIntegerOrCustomIdentFromGridPosition(RefPtrWillBeRawPtr<CSSPrimitiveValue>& numericValue, RefPtrWillBeRawPtr<CSSIdentValue>& gridLineName);
     bool parseGridItemPositionShorthand(CSSPropertyID, bool important);
     bool parseGridTemplateRowsAndAreas(PassRefPtrWillBeRawPtr<CSSValue>, bool important);
     bool parseGridTemplateShorthand(bool important);
@@ -270,8 +271,8 @@ private:
     bool parseGeneratedImage(CSSParserValueList*, RefPtrWillBeRawPtr<CSSValue>&);
 
     PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createPrimitiveNumericValue(CSSParserValue*);
-    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createPrimitiveStringValue(CSSParserValue*);
-    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createPrimitiveCustomIdentValue(CSSParserValue*);
+    PassRefPtrWillBeRawPtr<CSSStringValue> createPrimitiveStringValue(CSSParserValue*);
+    PassRefPtrWillBeRawPtr<CSSIdentValue> createPrimitiveCustomIdentValue(CSSParserValue*);
 
     PassRefPtrWillBeRawPtr<CSSValue> createCSSImageValueWithReferrer(const String& rawValue, const KURL&);
 
@@ -285,7 +286,7 @@ private:
         Orientation,
     };
 
-    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parsePage();
+    PassRefPtrWillBeRawPtr<CSSValue> parsePage();
     PassRefPtrWillBeRawPtr<CSSValueList> parseSize();
     SizeParameterType parseSizeParameter(CSSValueList* parsedValues, CSSParserValue*, SizeParameterType prevParamType);