Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGPathSegLinetoHorizontalRel.h

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 11 matching lines @@
 #ifndef SVGPathSegLinetoHorizontalRel_h
 #define SVGPathSegLinetoHorizontalRel_h
 
 #include "core/svg/SVGPathSegLinetoHorizontal.h"
 
 namespace blink {
 
 class SVGPathSegLinetoHorizontalRel final : public SVGPathSegLinetoHorizontal {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtr<SVGPathSegLinetoHorizontalRel> create(SVGPathElement* element, float x)
+    static PassRefPtrWillBeRawPtr<SVGPathSegLinetoHorizontalRel> create(SVGPathElement* element, float x)
     {
-        return adoptRef(new SVGPathSegLinetoHorizontalRel(element, x));
+        return adoptRefWillBeNoop(new SVGPathSegLinetoHorizontalRel(element, x));
     }
 
 private:
     SVGPathSegLinetoHorizontalRel(SVGPathElement* element, float x)
         : SVGPathSegLinetoHorizontal(element, x) { }
 
     virtual unsigned short pathSegType() const override { return PATHSEG_LINETO_HORIZONTAL_REL; }
     virtual String pathSegTypeAsLetter() const override { return "h"; }
 };
 
 } // namespace blink
 
 #endif // SVGPathSegLinetoHorizontalRel_h