CSSValue Immediates: Add move operators to CSSPrimitiveValue

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 16772337db79b9909be528a23f2b1113621b9965..cf2eef0afd9d57397c5e329d518990aa65ab9e10 100644
--- a/Source/core/css/StylePropertySet.h
+++ b/Source/core/css/StylePropertySet.h
@@ -90,7 +90,7 @@ public:
     int findPropertyIndex(CSSPropertyID) const;
     bool hasProperty(CSSPropertyID property) const { return findPropertyIndex(property) != -1; }
 
-    NullableCSSValue getPropertyCSSValue(CSSPropertyID) const;
+    const NullableCSSValue getPropertyCSSValue(CSSPropertyID) const;
     String getPropertyValue(CSSPropertyID) const;
 
     bool propertyIsImportant(CSSPropertyID) const;
@@ -142,6 +142,7 @@ protected:
     unsigned m_arraySize : 28;
 
     friend class PropertySetCSSStyleDeclaration;
+
 };
 
 class CORE_EXPORT ImmutableStylePropertySet : public StylePropertySet {
@@ -195,6 +196,7 @@ public:
     // These expand shorthand properties into multiple properties.
     bool setProperty(CSSPropertyID unresolvedProperty, const String& value, bool important = false, StyleSheetContents* contextStyleSheet = 0);
     void setProperty(CSSPropertyID, const CSSValue&, bool important = false);
+    void setProperty(CSSPropertyID, const CSSPrimitiveValue&, bool important = false);
 
     // These do not. FIXME: This is too messy, we can do better.
     bool setProperty(CSSPropertyID, CSSValueID identifier, bool important = false);