Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGEllipseElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 21 matching lines @@
     , m_cy(SVGAnimatedLength::create(this, SVGNames::cyAttr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
     , m_rx(SVGAnimatedLength::create(this, SVGNames::rxAttr, SVGLength::create(LengthModeWidth), ForbidNegativeLengths))
     , m_ry(SVGAnimatedLength::create(this, SVGNames::ryAttr, SVGLength::create(LengthModeHeight), ForbidNegativeLengths))
 {
     addToPropertyMap(m_cx);
     addToPropertyMap(m_cy);
     addToPropertyMap(m_rx);
     addToPropertyMap(m_ry);
 }
 
+void SVGEllipseElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_cx);
+    visitor->trace(m_cy);
+    visitor->trace(m_rx);
+    visitor->trace(m_ry);
+    SVGGeometryElement::trace(visitor);
+}
+
 DEFINE_NODE_FACTORY(SVGEllipseElement)
 
 bool SVGEllipseElement::isSupportedAttribute(const QualifiedName& attrName)
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     if (supportedAttributes.isEmpty()) {
         supportedAttributes.add(SVGNames::cxAttr);
         supportedAttributes.add(SVGNames::cyAttr);
         supportedAttributes.add(SVGNames::rxAttr);
         supportedAttributes.add(SVGNames::ryAttr);
@@ skipping 43 matching lines @@
         || m_rx->currentValue()->isRelative()
         || m_ry->currentValue()->isRelative();
 }
 
 RenderObject* SVGEllipseElement::createRenderer(RenderStyle*)
 {
     return new RenderSVGEllipse(this);
 }
 
 } // namespace blink