Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGAnimatedString.h

 /*
  * Copyright (C) 2014 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 20 matching lines @@
 #ifndef SVGAnimatedString_h
 #define SVGAnimatedString_h
 
 #include "core/svg/SVGString.h"
 #include "core/svg/properties/SVGAnimatedProperty.h"
 
 namespace blink {
 
 class SVGAnimatedString final : public SVGAnimatedProperty<SVGString> {
 public:
-    static PassRefPtr<SVGAnimatedString> create(SVGElement* contextElement, const QualifiedName& attributeName, PassRefPtr<SVGString> initialValue)
+    static PassRefPtrWillBeRawPtr<SVGAnimatedString> create(SVGElement* contextElement, const QualifiedName& attributeName, PassRefPtrWillBeRawPtr<SVGString> initialValue)
     {
-        return adoptRef(new SVGAnimatedString(contextElement, attributeName, initialValue));
+        return adoptRefWillBeNoop(new SVGAnimatedString(contextElement, attributeName, initialValue));
     }
 
 protected:
-    SVGAnimatedString(SVGElement* contextElement, const QualifiedName& attributeName, PassRefPtr<SVGString> initialValue)
+    SVGAnimatedString(SVGElement* contextElement, const QualifiedName& attributeName, PassRefPtrWillBeRawPtr<SVGString> initialValue)
         : SVGAnimatedProperty<SVGString>(contextElement, attributeName, initialValue)
     {
     }
 };
 
 } // namespace blink
 
 #endif // SVGAnimatedString_h