Revert 158219 "Move dom/*Event* to events to match the DOM vs. E..."

Source/core/dom/EventRetargeter.cpp

 /*
  * Copyright (C) 2013 Google 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 263 matching lines @@
             break;
         }
         scope = scope->parentTreeScope();
     }
     for (Vector<TreeScope*, 32>::iterator iter = parentTreeScopes.begin(); iter < parentTreeScopes.end(); ++iter)
         relatedNodeMap.add(*iter, relatedNode);
     return relatedNode;
 }
 
 }