CSSValue Immediates: Add move operators to CSSPrimitiveValue

Source/core/css/StylePropertySet.cpp

Index: Source/core/css/StylePropertySet.cpp
diff --git a/Source/core/css/StylePropertySet.cpp b/Source/core/css/StylePropertySet.cpp
index 11b599a6d725e5e4179937ff7c6b341ce750636b..0039118da28a809b8905ab7cc4c9ec171f7f62bb 100644
--- a/Source/core/css/StylePropertySet.cpp
+++ b/Source/core/css/StylePropertySet.cpp
@@ -137,19 +137,19 @@ MutableStylePropertySet::MutableStylePropertySet(const StylePropertySet& other)
 
 String StylePropertySet::getPropertyValue(CSSPropertyID propertyID) const
 {
-    NullableCSSValue value = getPropertyCSSValue(propertyID);
+    const NullableCSSValue& value = getPropertyCSSValue(propertyID);
     if (value)
         return value->cssText();
 
     return StylePropertySerializer(*this).getPropertyValue(propertyID);
 }
 
-NullableCSSValue StylePropertySet::getPropertyCSSValue(CSSPropertyID propertyID) const
+const NullableCSSValue StylePropertySet::getPropertyCSSValue(CSSPropertyID propertyID) const
 {
     int foundPropertyIndex = findPropertyIndex(propertyID);
     if (foundPropertyIndex == -1)
         return nullptr;
-    return propertyAt(foundPropertyIndex).value();
+    return *reinterpret_cast<const NullableCSSValue*>(&propertyAt(foundPropertyIndex).value());
 }
 
 DEFINE_TRACE(StylePropertySet)
@@ -250,6 +250,11 @@ bool MutableStylePropertySet::setProperty(CSSPropertyID unresolvedProperty, cons
     return CSSParser::parseValue(this, unresolvedProperty, value, important, cssParserMode(), contextStyleSheet);
 }
 
+void MutableStylePropertySet::setProperty(CSSPropertyID propertyID, const CSSPrimitiveValue& prpValue, bool important)
+{
+    setProperty(propertyID, *reinterpret_cast<const CSSValue*>(&prpValue), important);
+}
+
 void MutableStylePropertySet::setProperty(CSSPropertyID propertyID, const CSSValue& prpValue, bool important)
 {
     StylePropertyShorthand shorthand = shorthandForProperty(propertyID);
@@ -434,7 +439,7 @@ PassRefPtrWillBeRawPtr<MutableStylePropertySet> StylePropertySet::copyProperties
     WillBeHeapVector<CSSProperty, 256> list;
     list.reserveInitialCapacity(properties.size());
     for (unsigned i = 0; i < properties.size(); ++i) {
-        NullableCSSValue value = getPropertyCSSValue(properties[i]);
+        const NullableCSSValue& value = getPropertyCSSValue(properties[i]);
         if (value)
             list.append(CSSProperty(properties[i], *value, false));
     }