Oilpan: Allocate all EventTarget derived types on the manged heap.

Source/core/svg/SVGElementInstance.h

 /*
  * Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 21 matching lines @@
 void addChildNodesToDeletionQueue(GenericNode*& head, GenericNode*& tail, GenericNodeContainer&);
 };
 
 class Document;
 class SVGElement;
 class SVGUseElement;
 
 // SVGElementInstance mimics Node, but without providing all its functionality
 class SVGElementInstance FINAL : public TreeSharedWillBeRefCountedGarbageCollected<SVGElementInstance>, public EventTarget, public ScriptWrappable {
     DEFINE_EVENT_TARGET_REFCOUNTING(TreeSharedWillBeRefCountedGarbageCollected<SVGElementInstance>);
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SVGElementInstance);
 public:
     static PassRefPtrWillBeRawPtr<SVGElementInstance> create(SVGUseElement* correspondingUseElement, SVGUseElement* directUseElement, PassRefPtrWillBeRawPtr<SVGElement> originalElement);
 
     virtual ~SVGElementInstance();
 
     void setParentOrShadowHostNode(SVGElementInstance* instance) { m_parentInstance = instance; }
 
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ExecutionContext* executionContext() const OVERRIDE;
 
@@ skipping 14 matching lines @@
     SVGElementInstance* parentNode() const { return m_parentInstance; }
 
     SVGElementInstance* previousSibling() const { return m_previousSibling; }
     SVGElementInstance* nextSibling() const { return m_nextSibling; }
 
     SVGElementInstance* firstChild() const { return m_firstChild; }
     SVGElementInstance* lastChild() const { return m_lastChild; }
 
     inline Document* ownerDocument() const;
 
-    virtual void trace(Visitor*);
+    virtual void trace(Visitor*) OVERRIDE;
 
     // EventTarget API
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), abort);
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), blur);
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), change);
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), click);
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), contextmenu);
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dblclick);
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), error);
     DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), focus);
@@ skipping 82 matching lines @@
     RawPtrWillBeMember<SVGElementInstance> m_previousSibling;
     RawPtrWillBeMember<SVGElementInstance> m_nextSibling;
 
     RawPtrWillBeMember<SVGElementInstance> m_firstChild;
     RawPtrWillBeMember<SVGElementInstance> m_lastChild;
 };
 
 } // namespace WebCore
 
 #endif