Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGImageElement.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 10 matching lines @@
 #ifndef SVGImageElement_h
 #define SVGImageElement_h
 
 #include "core/SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
 #include "core/svg/SVGGraphicsElement.h"
 #include "core/svg/SVGImageLoader.h"
 #include "core/svg/SVGURIReference.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
 class SVGImageElement final : public SVGGraphicsElement,
                               public SVGURIReference {
     DEFINE_WRAPPERTYPEINFO();
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SVGImageElement);
 public:
     DECLARE_NODE_FACTORY(SVGImageElement);
     virtual void trace(Visitor*) override;
 
     bool currentFrameHasSingleSecurityOrigin() const;
 
     SVGAnimatedLength* x() const { return m_x.get(); }
     SVGAnimatedLength* y() const { return m_y.get(); }
     SVGAnimatedLength* width() const { return m_width.get(); }
     SVGAnimatedLength* height() const { return m_height.get(); }
@@ skipping 16 matching lines @@
     virtual RenderObject* createRenderer(RenderStyle*) override;
 
     virtual const AtomicString imageSourceURL() const override;
 
     virtual bool haveLoadedRequiredResources() override;
 
     virtual bool selfHasRelativeLengths() const override;
     virtual void didMoveToNewDocument(Document& oldDocument) override;
     SVGImageLoader& imageLoader() { return *m_imageLoader; }
 
-    RefPtr<SVGAnimatedLength> m_x;
-    RefPtr<SVGAnimatedLength> m_y;
-    RefPtr<SVGAnimatedLength> m_width;
-    RefPtr<SVGAnimatedLength> m_height;
-    RefPtr<SVGAnimatedPreserveAspectRatio> m_preserveAspectRatio;
+    RefPtrWillBeMember<SVGAnimatedLength> m_x;
+    RefPtrWillBeMember<SVGAnimatedLength> m_y;
+    RefPtrWillBeMember<SVGAnimatedLength> m_width;
+    RefPtrWillBeMember<SVGAnimatedLength> m_height;
+    RefPtrWillBeMember<SVGAnimatedPreserveAspectRatio> m_preserveAspectRatio;
 
     OwnPtrWillBeMember<SVGImageLoader> m_imageLoader;
     bool m_needsLoaderURIUpdate : 1;
 };
 
 } // namespace blink
 
 #endif // SVGImageElement_h