CSSValue Immediates: Replace CSSValue usage with const references

Source/core/editing/EditingStyle.cpp

Index: Source/core/editing/EditingStyle.cpp
diff --git a/Source/core/editing/EditingStyle.cpp b/Source/core/editing/EditingStyle.cpp
index d19952dffcffc379d73042d7a9befd39c5d83cc8..17bb1b7b8ff0c8c6fff05462c3548e7693610ff0 100644
--- a/Source/core/editing/EditingStyle.cpp
+++ b/Source/core/editing/EditingStyle.cpp
@@ -149,7 +149,7 @@ static PassRefPtrWillBeRawPtr<MutableStylePropertySet> editingStyleFromComputedS
 static PassRefPtrWillBeRawPtr<MutableStylePropertySet> getPropertiesNotIn(StylePropertySet* styleWithRedundantProperties, CSSStyleDeclaration* baseStyle);
 enum LegacyFontSizeMode { AlwaysUseLegacyFontSize, UseLegacyFontSizeOnlyIfPixelValuesMatch };
 static int legacyFontSizeFromCSSValue(Document*, CSSPrimitiveValue*, bool, LegacyFontSizeMode);
-static bool isTransparentColorValue(NullableCSSValue);
+static bool isTransparentColorValue(const NullableCSSValue&);
 static bool hasTransparentBackgroundColor(CSSStyleDeclaration*);
 static bool hasTransparentBackgroundColor(StylePropertySet*);
 static NullableCSSValue backgroundColorInEffect(Node*);
@@ -1200,7 +1200,7 @@ void EditingStyle::mergeStyleFromRulesForSerialization(Element* element)
         unsigned propertyCount = m_mutableStyle->propertyCount();
         for (unsigned i = 0; i < propertyCount; ++i) {
             StylePropertySet::PropertyReference property = m_mutableStyle->propertyAt(i);
-            CSSValue value = property.value();
+            const CSSValue& value = property.value();
             if (!value.isPrimitiveValue())
                 continue;
             if (toCSSPrimitiveValue(value).isPercentage()) {
@@ -1570,7 +1570,7 @@ static void diffTextDecorations(MutableStylePropertySet* style, CSSPropertyID pr
     setTextDecorationProperty(style, newTextDecoration.get(), propertyID);
 }
 
-static bool fontWeightIsBold(CSSValue fontWeight)
+static bool fontWeightIsBold(const CSSValue& fontWeight)
 {
     if (!fontWeight.isPrimitiveValue())
         return false;
@@ -1599,7 +1599,7 @@ static bool fontWeightIsBold(CSSValue fontWeight)
     return false;
 }
 
-static bool fontWeightNeedsResolving(CSSValue fontWeight)
+static bool fontWeightNeedsResolving(const CSSValue& fontWeight)
 {
     if (!fontWeight.isPrimitiveValue())
         return true;
@@ -1681,7 +1681,7 @@ int legacyFontSizeFromCSSValue(Document* document, CSSPrimitiveValue* value, boo
     return 0;
 }
 
-bool isTransparentColorValue(NullableCSSValue cssValue)
+bool isTransparentColorValue(const NullableCSSValue& cssValue)
 {
     if (!cssValue)
         return true;