Split out String, URI and CustomIdent from CSSPrimitiveValue

Source/core/css/CSSValuePool.h

Index: Source/core/css/CSSValuePool.h
diff --git a/Source/core/css/CSSValuePool.h b/Source/core/css/CSSValuePool.h
index c6c4317a62cfdf10a52790ef4d1e6e84dd75bec4..9712d5e101cc382e94c8d39056bc0f9f92b16b92 100644
--- a/Source/core/css/CSSValuePool.h
+++ b/Source/core/css/CSSValuePool.h
@@ -32,6 +32,7 @@
 #include "core/css/CSSInheritedValue.h"
 #include "core/css/CSSInitialValue.h"
 #include "core/css/CSSPrimitiveValue.h"
+#include "core/css/CSSStringValue.h"
 #include "core/css/CSSUnsetValue.h"
 #include "core/css/CSSValueList.h"
 #include "wtf/HashMap.h"
@@ -44,7 +45,7 @@ class CORE_EXPORT CSSValuePool :  public NoBaseWillBeGarbageCollectedFinalized<C
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(CSSValuePool);
 public:
     PassRefPtrWillBeRawPtr<CSSValueList> createFontFaceValue(const AtomicString&);
-    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createFontFamilyValue(const String&);
+    PassRefPtrWillBeRawPtr<CSSStringValue> createFontFamilyValue(const String&);
     PassRefPtrWillBeRawPtr<CSSInheritedValue> createInheritedValue() { return m_inheritedValue; }
     PassRefPtrWillBeRawPtr<CSSInitialValue> createImplicitInitialValue() { return m_implicitInitialValue; }
     PassRefPtrWillBeRawPtr<CSSInitialValue> createExplicitInitialValue() { return m_explicitInitialValue; }
@@ -53,7 +54,6 @@ public:
     PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createIdentifierValue(CSSPropertyID identifier);
     PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createColorValue(unsigned rgbValue);
     PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createValue(double value, CSSPrimitiveValue::UnitType);
-    PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createValue(const String& value, CSSPrimitiveValue::UnitType type) { return CSSPrimitiveValue::create(value, type); }
     PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createValue(const Length& value, const ComputedStyle&);
     PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createValue(const Length& value, float zoom) { return CSSPrimitiveValue::create(value, zoom); }
     template<typename T> static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createValue(T value) { return CSSPrimitiveValue::create(value); }
@@ -85,7 +85,7 @@ private:
     typedef WillBeHeapHashMap<AtomicString, RefPtrWillBeMember<CSSValueList>> FontFaceValueCache;
     FontFaceValueCache m_fontFaceValueCache;
 
-    typedef WillBeHeapHashMap<String, RefPtrWillBeMember<CSSPrimitiveValue>> FontFamilyValueCache;
+    typedef WillBeHeapHashMap<String, RefPtrWillBeMember<CSSStringValue>> FontFamilyValueCache;
     FontFamilyValueCache m_fontFamilyValueCache;
 
     friend CORE_EXPORT CSSValuePool& cssValuePool();