remove memoryinstrumentation

Source/core/dom/Event.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. 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.
@@ skipping 144 matching lines @@
     Event* underlyingEvent() const { return m_underlyingEvent.get(); }
     void setUnderlyingEvent(PassRefPtr<Event>);
 
     virtual bool storesResultAsString() const;
     virtual void storeResult(const String&);
 
     virtual Clipboard* clipboard() const { return 0; }
 
     bool isBeingDispatched() const { return eventPhase(); }
 
-    virtual void reportMemoryUsage(MemoryObjectInfo*) const;
-
     virtual PassRefPtr<Event> cloneFor(HTMLIFrameElement*) const;
 
 protected:
     Event();
     Event(const AtomicString& type, bool canBubble, bool cancelable);
     Event(const AtomicString& type, const EventInit&);
 
     virtual void receivedTarget();
     bool dispatched() const { return m_target; }
 
@@ skipping 12 matching lines @@
     EventTarget* m_currentTarget;
     RefPtr<EventTarget> m_target;
     DOMTimeStamp m_createTime;
 
     RefPtr<Event> m_underlyingEvent;
 };
 
 } // namespace WebCore
 
 #endif // Event_h