Add support for KeyboardEvent.location attribute

Source/core/dom/KeyboardEvent.idl

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  *
  * 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 [
     ConstructorTemplate=Event
 ] interface KeyboardEvent : UIEvent {
 
     [InitializedByEventConstructor] readonly attribute DOMString        keyIdentifier;
-    [InitializedByEventConstructor] readonly attribute unsigned long    keyLocation;
+    [InitializedByEventConstructor] readonly attribute unsigned long    location;
+    [ImplementedAs=location, DeprecateAs=KeyboardEventKeyLocation, InitializedByEventConstructor] readonly attribute unsigned long keyLocation; // Deprecated.
     [InitializedByEventConstructor] readonly attribute boolean          ctrlKey;
     [InitializedByEventConstructor] readonly attribute boolean          shiftKey;
     [InitializedByEventConstructor] readonly attribute boolean          altKey;
     [InitializedByEventConstructor] readonly attribute boolean          metaKey;
     readonly attribute boolean          altGraphKey;
 
     // FIXME: this does not match the version in the DOM spec.
     void initKeyboardEvent([Default=Undefined] optional DOMString type, 
                            [Default=Undefined] optional boolean canBubble, 
                            [Default=Undefined] optional boolean cancelable, 
                            [Default=Undefined] optional Window view, 
                            [Default=Undefined] optional DOMString keyIdentifier,
-                           [Default=Undefined] optional unsigned long keyLocation,
+                           [Default=Undefined] optional unsigned long location,
                            [Default=Undefined] optional boolean ctrlKey,
                            [Default=Undefined] optional boolean altKey,
                            [Default=Undefined] optional boolean shiftKey,
                            [Default=Undefined] optional boolean metaKey,
                            [Default=Undefined] optional boolean altGraphKey);
 };