CSSValue Immediates: Make CSSPrimitiveValue a container

Source/core/css/StylePropertySet.h

Index: Source/core/css/StylePropertySet.h
diff --git a/Source/core/css/StylePropertySet.h b/Source/core/css/StylePropertySet.h
index bc717e84f3f8ebe117aa3f2eed077c2768461b67..b4b20d0bf68c4c95d83e464a12cad33d4bdf0e41 100644
--- a/Source/core/css/StylePropertySet.h
+++ b/Source/core/css/StylePropertySet.h
@@ -197,6 +197,7 @@ public:
     // These expand shorthand properties into multiple properties.
     bool setProperty(CSSPropertyID unresolvedProperty, const String& value, bool important = false, StyleSheetContents* contextStyleSheet = 0);
     void setProperty(CSSPropertyID, CSSValue, bool important = false);
+    void setProperty(CSSPropertyID, CSSPrimitiveValue, bool important = false);
 
     // These do not. FIXME: This is too messy, we can do better.
     bool setProperty(CSSPropertyID, CSSValueID identifier, bool important = false);