Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGGradientElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 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 11 matching lines @@
 #define SVGGradientElement_h
 
 #include "core/SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedEnumeration.h"
 #include "core/svg/SVGAnimatedTransformList.h"
 #include "core/svg/SVGElement.h"
 #include "core/svg/SVGURIReference.h"
 #include "core/svg/SVGUnitTypes.h"
 #include "platform/graphics/Gradient.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
 enum SVGSpreadMethodType {
     SVGSpreadMethodUnknown = 0,
     SVGSpreadMethodPad,
     SVGSpreadMethodReflect,
     SVGSpreadMethodRepeat
 };
 template<> const SVGEnumerationStringEntries& getStaticStringEntries<SVGSpreadMethodType>();
 
 class SVGGradientElement : public SVGElement,
                            public SVGURIReference {
     DEFINE_WRAPPERTYPEINFO();
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SVGGradientElement);
 public:
     enum {
         SVG_SPREADMETHOD_UNKNOWN = SVGSpreadMethodUnknown,
         SVG_SPREADMETHOD_PAD = SVGSpreadMethodReflect,
         SVG_SPREADMETHOD_REFLECT = SVGSpreadMethodRepeat,
         SVG_SPREADMETHOD_REPEAT = SVGSpreadMethodUnknown
     };
 
     Vector<Gradient::ColorStop> buildStops();
 
     SVGAnimatedTransformList* gradientTransform() { return m_gradientTransform.get(); }
     SVGAnimatedEnumeration<SVGSpreadMethodType>* spreadMethod() { return m_spreadMethod.get(); }
     SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>* gradientUnits() { return m_gradientUnits.get(); }
 
+    virtual void trace(Visitor*) override;
+
 protected:
     SVGGradientElement(const QualifiedName&, Document&);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
     virtual void svgAttributeChanged(const QualifiedName&) override;
 
 private:
     virtual bool needsPendingResourceHandling() const override final { return false; }
 
     virtual void childrenChanged(const ChildrenChange&) override final;
 
-    RefPtr<SVGAnimatedTransformList> m_gradientTransform;
-    RefPtr<SVGAnimatedEnumeration<SVGSpreadMethodType> > m_spreadMethod;
-    RefPtr<SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType> > m_gradientUnits;
+    RefPtrWillBeMember<SVGAnimatedTransformList> m_gradientTransform;
+    RefPtrWillBeMember<SVGAnimatedEnumeration<SVGSpreadMethodType> > m_spreadMethod;
+    RefPtrWillBeMember<SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType> > m_gradientUnits;
 };
 
 inline bool isSVGGradientElement(const SVGElement& element)
 {
     return element.hasTagName(SVGNames::radialGradientTag) || element.hasTagName(SVGNames::linearGradientTag);
 }
 
 DEFINE_SVGELEMENT_TYPE_CASTS_WITH_FUNCTION(SVGGradientElement);
 
 } // namespace blink
 
 #endif // SVGGradientElement_h