CSSValue Immediates: Change CSSValue to an object instead of a pointer

Source/core/animation/StringKeyframe.h

Index: Source/core/animation/StringKeyframe.h
diff --git a/Source/core/animation/StringKeyframe.h b/Source/core/animation/StringKeyframe.h
index 839fe75da8166b60e590fee3985754a2b18195b9..95b5dc142c5af278d88d42e1adc4ac77124516b1 100644
--- a/Source/core/animation/StringKeyframe.h
+++ b/Source/core/animation/StringKeyframe.h
@@ -22,9 +22,9 @@ public:
     }
 
     void setPropertyValue(CSSPropertyID, const String& value, Element*, StyleSheetContents*);
-    void setPropertyValue(CSSPropertyID, PassRefPtrWillBeRawPtr<CSSValue>);
+    void setPropertyValue(CSSPropertyID, CSSValue);
     void setPropertyValue(const QualifiedName&, const String& value, Element*);
-    CSSValue* cssPropertyValue(CSSPropertyID property) const
+    CSSValue cssPropertyValue(CSSPropertyID property) const
     {
         int index = m_propertySet->findPropertyIndex(property);
         RELEASE_ASSERT(index >= 0);
@@ -41,9 +41,9 @@ public:
 
     class CSSPropertySpecificKeyframe : public Keyframe::PropertySpecificKeyframe {
     public:
-        CSSPropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, CSSValue*, EffectModel::CompositeOperation);
+        CSSPropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, NullableCSSValue, EffectModel::CompositeOperation);
 
-        CSSValue* value() const { return m_value.get(); }
+        NullableCSSValue value() const { return m_value; }
 
         virtual void populateAnimatableValue(CSSPropertyID, Element&, const ComputedStyle* baseStyle) const;
         virtual const PassRefPtrWillBeRawPtr<AnimatableValue> getAnimatableValue() const override final { return m_animatableValueCache.get(); }
@@ -55,16 +55,16 @@ public:
         DECLARE_VIRTUAL_TRACE();
 
     private:
-        CSSPropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, CSSValue*);
+        CSSPropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, NullableCSSValue);
 
         virtual PassOwnPtrWillBeRawPtr<Keyframe::PropertySpecificKeyframe> cloneWithOffset(double offset) const;
         virtual bool isCSSPropertySpecificKeyframe() const override { return true; }
 
-        static bool createInterpolationsFromCSSValues(CSSPropertyID, CSSValue* fromCSSValue, CSSValue* toCSSValue, Element*, OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>>& interpolations);
+        static bool createInterpolationsFromCSSValues(CSSPropertyID, CSSValue fromCSSValue, CSSValue toCSSValue, Element*, OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>>& interpolations);
 
         void populateAnimatableValueCaches(CSSPropertyID, Keyframe::PropertySpecificKeyframe&, Element*, CSSValue& fromCSSValue, CSSValue& toCSSValue) const;
 
-        RefPtrWillBeMember<CSSValue> m_value;
+        NullableCSSValue m_value;
         mutable RefPtrWillBeMember<AnimatableValue> m_animatableValueCache;
     };