Rename DOMWindow interface to Window

Source/modules/webdatabase/WindowWebDatabase.idl

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
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  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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  */
 
-partial interface DOMWindow {
+[
+    ImplementedAs=DOMWindowWebDatabase
+] partial interface Window {
     [EnabledAtRuntime=database, MeasureAs=OpenWebDatabase, PerWorldBindings, ActivityLog=AccessForIsolatedWorlds, RaisesException] Database openDatabase(DOMString name, DOMString version, DOMString displayName, unsigned long estimatedSize, optional DatabaseCallback creationCallback);
 };