Sync the Touch-related interfaces with the two specs

Source/core/events/TouchEvent.idl

 /*
  * Copyright 2008, The Android Open Source Project
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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+
+// http://www.w3.org/TR/touch-events/#touchevent-interface
+
 interface TouchEvent : UIEvent {
     readonly attribute TouchList touches;
     readonly attribute TouchList targetTouches;
     readonly attribute TouchList changedTouches;
+    readonly attribute boolean altKey;
+    readonly attribute boolean metaKey;
     readonly attribute boolean ctrlKey;
     readonly attribute boolean shiftKey;
-    readonly attribute boolean altKey;
-    readonly attribute boolean metaKey;
 
+    // FIXME: initTouch() is not yet standardized.
     void initTouchEvent([Default=Undefined] optional TouchList touches,
                         [Default=Undefined] optional TouchList targetTouches,
                         [Default=Undefined] optional TouchList changedTouches,
                         [Default=Undefined] optional DOMString type,
                         [Default=Undefined] optional Window view,
                         [Default=Undefined] optional long unused1,
                         [Default=Undefined] optional long unused2,
                         [Default=Undefined] optional long unused3,
                         [Default=Undefined] optional long unused4,
                         [Default=Undefined] optional boolean ctrlKey,
                         [Default=Undefined] optional boolean altKey,
                         [Default=Undefined] optional boolean shiftKey,
                         [Default=Undefined] optional boolean metaKey);
 };