Oilpan: move SVG property hierarchy to the heap.

Source/core/animation/animatable/AnimatableStrokeDasharrayList.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include "core/animation/animatable/AnimatableRepeatable.h"
 #include "core/svg/SVGLengthList.h"
 
 namespace blink {
 
 class AnimatableStrokeDasharrayList final : public AnimatableRepeatable {
 public:
     virtual ~AnimatableStrokeDasharrayList() { }
 
-    static PassRefPtrWillBeRawPtr<AnimatableStrokeDasharrayList> create(PassRefPtr<SVGLengthList> lengths)
+    static PassRefPtrWillBeRawPtr<AnimatableStrokeDasharrayList> create(PassRefPtrWillBeRawPtr<SVGLengthList> lengths)
     {
         return adoptRefWillBeNoop(new AnimatableStrokeDasharrayList(lengths));
     }
 
-    PassRefPtr<SVGLengthList> toSVGLengthList() const;
+    PassRefPtrWillBeRawPtr<SVGLengthList> toSVGLengthList() const;
 
     virtual void trace(Visitor*) override;
 
 protected:
     virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
     virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const override;
 
 private:
-    AnimatableStrokeDasharrayList(PassRefPtr<SVGLengthList>);
+    explicit AnimatableStrokeDasharrayList(PassRefPtrWillBeRawPtr<SVGLengthList>);
     // This will consume the vector passed into it.
     AnimatableStrokeDasharrayList(WillBeHeapVector<RefPtrWillBeMember<AnimatableValue> >& values)
         : AnimatableRepeatable(values)
     {
     }
 
     virtual AnimatableType type() const override { return TypeStrokeDasharrayList; }
 };
 
 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableStrokeDasharrayList, isStrokeDasharrayList());
 
 } // namespace blink
 
 #endif // AnimatableStrokeDasharrayList_h