Don't generate dom_deprecated files at all.

lib/dom/templates/dom/dart2js/impl_Storage.darttemplate

Index: lib/dom/templates/dom/dart2js/impl_Storage.darttemplate
===================================================================
--- lib/dom/templates/dom/dart2js/impl_Storage.darttemplate	(revision 11969)
+++ lib/dom/templates/dom/dart2js/impl_Storage.darttemplate	(working copy)
@@ -1,29 +0,0 @@
-// Copyright (c) 2012, 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.
-
-class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
-$!MEMBERS
-
-  // Storage needs a special implementation of dartObjectLocalStorage since it
-  // captures what would normally be an expando and places property in the
-  // storage, stringifying the assigned value.
-
-  get dartObjectLocalStorage() native """
-    if (this === window.localStorage)
-      return window._dartLocalStorageLocalStorage;
-    else if (this === window.sessionStorage)
-      return window._dartSessionStorageLocalStorage;
-    else
-      throw new UnsupportedOperationException('Cannot dartObjectLocalStorage for unknown Storage object.');
-""" { throw new UnsupportedOperationException(''); }
-
-  void set dartObjectLocalStorage(var value) native """
-    if (this === window.localStorage)
-      window._dartLocalStorageLocalStorage = value;
-    else if (this === window.sessionStorage)
-      window._dartSessionStorageLocalStorage = value;
-    else
-      throw new UnsupportedOperationException('Cannot dartObjectLocalStorage for unknown Storage object.');
-""" { throw new UnsupportedOperationException(''); }
-}