Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGTextPathElement.cpp

 /*
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2010 Rob Buis <rwlbuis@gmail.com>
  *
  * 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 50 matching lines @@
 
 DEFINE_NODE_FACTORY(SVGTextPathElement)
 
 SVGTextPathElement::~SVGTextPathElement()
 {
 #if !ENABLE(OILPAN)
     clearResourceReferences();
 #endif
 }
 
+void SVGTextPathElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_startOffset);
+    visitor->trace(m_method);
+    visitor->trace(m_spacing);
+    SVGTextContentElement::trace(visitor);
+    SVGURIReference::trace(visitor);
+}
+
 void SVGTextPathElement::clearResourceReferences()
 {
     removeAllOutgoingReferences();
 }
 
 bool SVGTextPathElement::isSupportedAttribute(const QualifiedName& attrName)
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     if (supportedAttributes.isEmpty()) {
         SVGURIReference::addSupportedAttributes(supportedAttributes);
@@ skipping 76 matching lines @@
         clearResourceReferences();
 }
 
 bool SVGTextPathElement::selfHasRelativeLengths() const
 {
     return m_startOffset->currentValue()->isRelative()
         || SVGTextContentElement::selfHasRelativeLengths();
 }
 
 } // namespace blink