Merge the Sky Engine changes from the SkyDart branch

sky/engine/core/events/UIEvent.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 12 matching lines @@
     [InitializedByEventConstructor] readonly attribute Window? view;
     [InitializedByEventConstructor] readonly attribute long detail;
 
      void initUIEvent([Default=Undefined] optional DOMString type,
                                     [Default=Undefined] optional boolean canBubble,
                                     [Default=Undefined] optional boolean cancelable,
                                     [Default=Undefined] optional Window view,
                                     [Default=Undefined] optional long detail);
 
     // Non-standard
-    [MeasureAs=UIEventLayerX] readonly attribute long layerX;
-    [MeasureAs=UIEventLayerY] readonly attribute long layerY;
-    [MeasureAs=UIEventPageX] readonly attribute long pageX;
-    [MeasureAs=UIEventPageY] readonly attribute long pageY;
+    readonly attribute long layerX;
+    readonly attribute long layerY;
+    readonly attribute long pageX;
+    readonly attribute long pageY;
 
     // FIXME: these belong on the KeyboardEvent interface
     readonly attribute long keyCode;
     readonly attribute long charCode;
     readonly attribute long which;
 };