Revert the merge. Mac build is mysteriously broken.

third_party/WebKit/WebCore/page/EventHandler.h

 /*
  * Copyright (C) 2006, 2007 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 31 matching lines @@
 class NSEvent;
 class NSView;
 #endif
 #endif
 
 namespace WebCore {
 
 class AtomicString;
 class Clipboard;
 class Cursor;
+class EventTargetNode;
 class Event;
 class FloatPoint;
 class FloatRect;
 class Frame;
 class HitTestRequest;
 class HitTestResult;
 class HTMLFrameSetElement;
 class KeyboardEvent;
 class MouseEventWithHitTestResults;
 class Node;
@@ skipping 283 matching lines @@
     bool m_sendingEventToSubview;
     int m_activationEventNumber;
 #endif
 
 };
 
 } // namespace WebCore
 
 #endif // EventHandler_h