CSSValue Immediates: Make CSSPrimitiveValue a container

Source/core/css/CSSComputedStyleDeclaration.cpp

Index: Source/core/css/CSSComputedStyleDeclaration.cpp
diff --git a/Source/core/css/CSSComputedStyleDeclaration.cpp b/Source/core/css/CSSComputedStyleDeclaration.cpp
index efb9963d1792cab24c422a8205be7a0f940a75da..81b316d8cb5f1ec0b206e6b560085ee5370cd711 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -410,7 +410,7 @@ static CSSValueID cssIdentifierForFontSizeKeyword(int keywordSize)
     return static_cast<CSSValueID>(CSSValueXxSmall + keywordSize - 1);
 }
 
-inline static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> zoomAdjustedPixelValue(double value, const ComputedStyle& style)
+inline static CSSPrimitiveValue zoomAdjustedPixelValue(double value, const ComputedStyle& style)
 {
     return cssValuePool().createValue(adjustFloatForAbsoluteZoom(value, style), CSSPrimitiveValue::CSS_PX);
 }
@@ -610,7 +610,7 @@ bool CSSComputedStyleDeclaration::cssPropertyMatches(CSSPropertyID propertyID, c
         const ComputedStyle* style = m_node->ensureComputedStyle(m_pseudoElementSpecifier);
         if (style && style->fontDescription().keywordSize()) {
             CSSValueID sizeValue = cssIdentifierForFontSizeKeyword(style->fontDescription().keywordSize());
-            const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(propertyValue);
+            const CSSPrimitiveValue primitiveValue = toCSSPrimitiveValue(propertyValue);
             if (primitiveValue.isValueID() && primitiveValue.getValueID() == sizeValue)
                 return true;
         }