Oilpan: move SVG property hierarchy to the heap.

Source/core/rendering/svg/RenderSVGResourceRadialGradient.cpp

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2012 Adobe Systems Incorporated. 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 18 matching lines @@
 
 RenderSVGResourceRadialGradient::RenderSVGResourceRadialGradient(SVGRadialGradientElement* node)
     : RenderSVGResourceGradient(node)
 {
 }
 
 RenderSVGResourceRadialGradient::~RenderSVGResourceRadialGradient()
 {
 }
 
+void RenderSVGResourceRadialGradient::trace(Visitor* visitor)
+{
+    visitor->trace(m_attributes);
+    RenderSVGResourceGradient::trace(visitor);
+}
+
 bool RenderSVGResourceRadialGradient::collectGradientAttributes(SVGGradientElement* gradientElement)
 {
     m_attributes = RadialGradientAttributes();
     return toSVGRadialGradientElement(gradientElement)->collectGradientAttributes(m_attributes);
 }
 
 FloatPoint RenderSVGResourceRadialGradient::centerPoint(const RadialGradientAttributes& attributes) const
 {
     return SVGLengthContext::resolvePoint(element(), attributes.gradientUnits(), attributes.cx(), attributes.cy());
 }
@@ skipping 19 matching lines @@
         this->focalRadius(m_attributes),
         this->centerPoint(m_attributes),
         this->radius(m_attributes));
 
     gradientData->gradient->setSpreadMethod(platformSpreadMethodFromSVGType(m_attributes.spreadMethod()));
 
     addStops(gradientData, m_attributes.stops());
 }
 
 }