CL for perf tryjob on win

Source/core/animation/animatable/AnimatableImage.h

Index: Source/core/animation/animatable/AnimatableImage.h
diff --git a/Source/core/animation/animatable/AnimatableImage.h b/Source/core/animation/animatable/AnimatableImage.h
index 260f0b42cec57f52e8b66b0dcfd7d7537a176282..9914b8d378226936dd477dd24b130af20fb974d5 100644
--- a/Source/core/animation/animatable/AnimatableImage.h
+++ b/Source/core/animation/animatable/AnimatableImage.h
@@ -40,11 +40,11 @@ namespace blink {
 class AnimatableImage final : public AnimatableValue {
 public:
     virtual ~AnimatableImage() { }
-    static PassRefPtrWillBeRawPtr<AnimatableImage> create(PassRefPtrWillBeRawPtr<CSSValue> value)
+    static PassRefPtrWillBeRawPtr<AnimatableImage> create(CSSValue value)
     {
         return adoptRefWillBeNoop(new AnimatableImage(value));
     }
-    CSSValue* toCSSValue() const { return m_value.get(); }
+    CSSValue toCSSValue() const { return m_value; }
 
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
@@ -57,15 +57,14 @@ protected:
     virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
 
 private:
-    AnimatableImage(PassRefPtrWillBeRawPtr<CSSValue> value)
+    AnimatableImage(CSSValue value)
         : m_value(value)
     {
-        ASSERT(m_value.get());
     }
     virtual AnimatableType type() const override { return TypeImage; }
     virtual bool equalTo(const AnimatableValue*) const override;
 
-    const RefPtrWillBeMember<CSSValue> m_value;
+    const CSSValue m_value;
 };
 
 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableImage, isImage());