CSSValue Immediates: Replace CSSPrimitiveValue usage with const references

Source/core/editing/ApplyStyleCommand.cpp

Index: Source/core/editing/ApplyStyleCommand.cpp
diff --git a/Source/core/editing/ApplyStyleCommand.cpp b/Source/core/editing/ApplyStyleCommand.cpp
index b25c4e967cd60a8ba5e44d34e21ef6a2c135fb03..198c63df23e9d8b7cd23fa92c5fbbba57b78cb9b 100644
--- a/Source/core/editing/ApplyStyleCommand.cpp
+++ b/Source/core/editing/ApplyStyleCommand.cpp
@@ -414,7 +414,7 @@ void ApplyStyleCommand::applyRelativeFontStyleChange(EditingStyle* style)
         RefPtrWillBeRawPtr<MutableStylePropertySet> inlineStyle = copyStyleOrCreateEmpty(element->inlineStyle());
         float currentFontSize = computedFontSize(node);
         float desiredFontSize = max(MinimumFontSize, startingFontSizes.get(node) + style->fontSizeDelta());
-        NullableCSSValue value = inlineStyle->getPropertyCSSValue(CSSPropertyFontSize);
+        const NullableCSSValue& value = inlineStyle->getPropertyCSSValue(CSSPropertyFontSize);
         if (value) {
             element->removeInlineStyleProperty(CSSPropertyFontSize);
             currentFontSize = computedFontSize(node);
@@ -1548,7 +1548,7 @@ float ApplyStyleCommand::computedFontSize(Node* node)
     if (!value)
         return 0;
 
-    CSSPrimitiveValue primitiveValue = toCSSPrimitiveValue(*value);
+    const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
     ASSERT(primitiveValue.primitiveType() == CSSPrimitiveValue::CSS_PX);
     return primitiveValue.getFloatValue();
 }