Have Document::nodeWillBeRemoved() take a reference

Source/core/page/EventHandler.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 70 matching lines @@
 enum AppendTrailingWhitespace { ShouldAppendTrailingWhitespace, DontAppendTrailingWhitespace };
 enum CheckDragHysteresis { ShouldCheckDragHysteresis, DontCheckDragHysteresis };
 
 class EventHandler {
     WTF_MAKE_NONCOPYABLE(EventHandler);
 public:
     explicit EventHandler(Frame*);
     ~EventHandler();
 
     void clear();
-    void nodeWillBeRemoved(Node*);
+    void nodeWillBeRemoved(Node&);
 
     void updateSelectionForMouseDrag();
 
     Node* mousePressNode() const;
 
 #if OS(WIN)
     void startPanScrolling(RenderObject*);
 #endif
 
     void stopAutoscrollTimer();
@@ skipping 266 matching lines @@
     double m_maxMouseMovedDuration;
     PlatformEvent::Type m_baseEventType;
     bool m_didStartDrag;
 
     bool m_longTapShouldInvokeContextMenu;
 };
 
 } // namespace WebCore
 
 #endif // EventHandler_h