Mark frog DOMWindow as aliased with global scope.

client/dom/frog/frog_dom.dart

 #library('dom');
 
 #native('frog_dom.js');
 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // DO NOT EDIT
 // Auto-generated Dart DOM library.
 
@@ skipping 974 matching lines @@
 
   String createObjectURL(Blob blob) native;
 
   void revokeObjectURL(String url) native;
 
   var dartObjectLocalStorage;
 
   String get typeName() native;
 }
 
-// TODO(jmesserly): generator needs to know to put in @
 class DOMWindow native "@*DOMWindow" {
 
   DOMApplicationCache applicationCache;
 
   Navigator clientInformation;
 
   bool closed;
 
   Console console;
 
@@ skipping 9775 matching lines @@
 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 typedef bool RequestAnimationFrameCallback(int time);
 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 typedef void TimeoutHandler();