CSSValue Immediates: Replace CSSPrimitiveValue usage with const references

Source/core/css/CSSValuePool.cpp

Index: Source/core/css/CSSValuePool.cpp
diff --git a/Source/core/css/CSSValuePool.cpp b/Source/core/css/CSSValuePool.cpp
index 2962a3e260dfd9c8fe9a55fc8c77dc483e7ef99d..1b12b4fe77572919b5af707b57baf166df77e7ad 100644
--- a/Source/core/css/CSSValuePool.cpp
+++ b/Source/core/css/CSSValuePool.cpp
@@ -60,7 +60,7 @@ CSSPrimitiveValue CSSValuePool::createIdentifierValue(CSSValueID ident)
 
     if (!m_identifierValueCache[ident])
         m_identifierValueCache[ident] = CSSPrimitiveValue::createIdentifier(ident);
-    return toCSSPrimitiveValue(*m_identifierValueCache[ident]);
+    return toCSSPrimitiveValue(m_identifierValueCache[ident]);
 }
 
 CSSPrimitiveValue CSSValuePool::createIdentifierValue(CSSPropertyID ident)
@@ -88,7 +88,7 @@ CSSPrimitiveValue CSSValuePool::createColorValue(unsigned rgbValue)
     ColorValueCache::AddResult entry = m_colorValueCache.add(rgbValue, dummyValue);
     if (entry.isNewEntry)
         entry.storedValue->value = CSSPrimitiveValue::createColor(rgbValue);
-    return toCSSPrimitiveValue(*entry.storedValue->value);
+    return toCSSPrimitiveValue(entry.storedValue->value);
 }
 
 CSSPrimitiveValue CSSValuePool::createValue(double value, CSSPrimitiveValue::UnitType type)
@@ -107,15 +107,15 @@ CSSPrimitiveValue CSSValuePool::createValue(double value, CSSPrimitiveValue::Uni
     case CSSPrimitiveValue::CSS_PX:
         if (!m_pixelValueCache[intValue])
             m_pixelValueCache[intValue] = CSSPrimitiveValue::create(value, type);
-        return toCSSPrimitiveValue(*m_pixelValueCache[intValue]);
+        return toCSSPrimitiveValue(m_pixelValueCache[intValue]);
     case CSSPrimitiveValue::CSS_PERCENTAGE:
         if (!m_percentValueCache[intValue])
             m_percentValueCache[intValue] = CSSPrimitiveValue::create(value, type);
-        return toCSSPrimitiveValue(*m_percentValueCache[intValue]);
+        return toCSSPrimitiveValue(m_percentValueCache[intValue]);
     case CSSPrimitiveValue::CSS_NUMBER:
         if (!m_numberValueCache[intValue])
             m_numberValueCache[intValue] = CSSPrimitiveValue::create(value, type);
-        return toCSSPrimitiveValue(*m_numberValueCache[intValue]);
+        return toCSSPrimitiveValue(m_numberValueCache[intValue]);
     default:
         return CSSPrimitiveValue::create(value, type);
     }
@@ -131,7 +131,7 @@ CSSPrimitiveValue CSSValuePool::createFontFamilyValue(const String& familyName)
     NullableCSSValue& value = m_fontFamilyValueCache.add(familyName, nullptr).storedValue->value;
     if (!value)
         value = CSSPrimitiveValue::create(familyName, CSSPrimitiveValue::CSS_CUSTOM_IDENT);
-    return toCSSPrimitiveValue(*value);
+    return toCSSPrimitiveValue(value);
 }
 
 PassRefPtrWillBeRawPtr<CSSValueList> CSSValuePool::createFontFaceValue(const AtomicString& string)