CL for perf tryjob on win

Source/core/animation/ConstantStyleInterpolation.h

Index: Source/core/animation/ConstantStyleInterpolation.h
diff --git a/Source/core/animation/ConstantStyleInterpolation.h b/Source/core/animation/ConstantStyleInterpolation.h
index 504e06c3c2aa1824b8daacd2e9440f7e0e1b2b21..936e37c7d5267f4927fafff5f93b4e4d6848ed1d 100644
--- a/Source/core/animation/ConstantStyleInterpolation.h
+++ b/Source/core/animation/ConstantStyleInterpolation.h
@@ -12,14 +12,14 @@ namespace blink {
 
 class ConstantStyleInterpolation : public StyleInterpolation {
 public:
-    static PassRefPtrWillBeRawPtr<ConstantStyleInterpolation> create(CSSValue* value, CSSPropertyID id)
+    static PassRefPtrWillBeRawPtr<ConstantStyleInterpolation> create(CSSValue value, CSSPropertyID id)
     {
         return adoptRefWillBeNoop(new ConstantStyleInterpolation(value, id));
     }
 
     virtual void apply(StyleResolverState& state) const override
     {
-        StyleBuilder::applyProperty(m_id, state, m_value.get());
+        StyleBuilder::applyProperty(m_id, state, m_value);
     }
 
     DEFINE_INLINE_VIRTUAL_TRACE()
@@ -29,12 +29,12 @@ public:
     }
 
 private:
-    ConstantStyleInterpolation(CSSValue* value, CSSPropertyID id)
+    ConstantStyleInterpolation(CSSValue value, CSSPropertyID id)
         : StyleInterpolation(InterpolableList::create(0), InterpolableList::create(0), id)
         , m_value(value)
     { }
 
-    RefPtrWillBeMember<CSSValue> m_value;
+    CSSValue m_value;
 };
 
 }