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 4f199bb0754e1cc97e8fbe871cdbc1374f578949..c65cc080a2b2dbdb76836f026cecb79fd9a62a1c 100644
--- a/Source/core/css/parser/CSSPropertyParser.h
+++ b/Source/core/css/parser/CSSPropertyParser.h
@@ -44,6 +44,7 @@ class CSSParserValueList;
 class CSSPrimitiveValue;
 class CSSProperty;
 class CSSQuadValue;
+class CSSStringValue;
 class CSSValue;
 class CSSValueList;
 class StylePropertyShorthand;
@@ -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<CSSStringValue>& 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<CSSStringValue> 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);