Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/graphics/filters/SVGFilter.cpp

 /*
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Google Inc. 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 39 matching lines @@
 
 FloatPoint3D SVGFilter::resolve3dPoint(const FloatPoint3D& point) const
 {
     if (!m_effectBBoxMode)
         return point;
     return FloatPoint3D(point.x() * m_targetBoundingBox.width() + m_targetBoundingBox.x(),
         point.y() * m_targetBoundingBox.height() + m_targetBoundingBox.y(),
         point.z() * sqrtf(m_targetBoundingBox.size().diagonalLengthSquared() / 2));
 }
 
-PassRefPtr<SVGFilter> SVGFilter::create(const IntRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode)
+PassRefPtrWillBeRawPtr<SVGFilter> SVGFilter::create(const IntRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode)
 {
-    return adoptRef(new SVGFilter(absoluteSourceDrawingRegion, targetBoundingBox, filterRegion, effectBBoxMode));
+    return adoptRefWillBeNoop(new SVGFilter(absoluteSourceDrawingRegion, targetBoundingBox, filterRegion, effectBBoxMode));
 }
 
 } // namespace blink