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

Source/core/dom/MutationEvent.idl

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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 24 matching lines @@
                                           [Default=Undefined] optional boolean canBubble,
                                           [Default=Undefined] optional boolean cancelable,
                                           [Default=Undefined] optional Node relatedNode,
                                           [Default=Undefined] optional DOMString prevValue,
                                           [Default=Undefined] optional DOMString newValue,
                                           [Default=Undefined] optional DOMString attrName,
                                           [Default=Undefined] optional unsigned short attrChange);
 
 };