Oilpan: Move AnimatableValue's hierarchy to oilpan's heap

Source/core/animation/AnimatableShapeValue.h

Index: Source/core/animation/AnimatableShapeValue.h
diff --git a/Source/core/animation/AnimatableShapeValue.h b/Source/core/animation/AnimatableShapeValue.h
index 99246937ee921c042d5b89b0ecff1e728b0287c7..4306b29fdf7a8c2c943e23b5a5e37f8bd572f8c4 100644
--- a/Source/core/animation/AnimatableShapeValue.h
+++ b/Source/core/animation/AnimatableShapeValue.h
@@ -39,14 +39,16 @@ namespace WebCore {
 class AnimatableShapeValue FINAL : public AnimatableValue {
 public:
     virtual ~AnimatableShapeValue() { }
-    static PassRefPtr<AnimatableShapeValue> create(ShapeValue* shape)
+    static PassRefPtrWillBeRawPtr<AnimatableShapeValue> create(ShapeValue* shape)
     {
-        return adoptRef(new AnimatableShapeValue(shape));
+        return adoptRefWillBeNoop(new AnimatableShapeValue(shape));
     }
     ShapeValue* shapeValue() const { return m_shape.get(); }
 
+    virtual void trace(Visitor*) OVERRIDE { }
+
 protected:
-    virtual PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE;
+    virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const OVERRIDE;
     virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const OVERRIDE;
 
 private: