Update shell_window watchlist to reflect renamed files.

WATCHLISTS

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 338 matching lines @@
       'filepath': 'chrome/browser/renderer_host/|chrome/renderer/|'\
         'chrome/common/render',
     },
     'search': {
       'filepath': 'chrome/browser/ui/search/',
     },
     'sessions': {
       'filepath': 'chrome/browser/sessions/',
     },
     'shell_window': {
-      'filepath': 'chrome/browser/ui/(views/|gtk/|cocoa/|)extensions/shell'
+      'filepath': 'chrome/browser/ui/(views/|gtk/|cocoa/|)extensions/(shell|app)'
     },
     'site_instance': {
       'filepath': 'content/browser/site_instance|'\
         'content/browser/browsing_instance',
     },
     'speech': {
       'filepath': 'chrome/browser/speech/'\
                   '|content/browser/speech/'\
                   '|content/common/.*speech'\
                   '|content/public/.*speech'
@@ skipping 288 matching lines @@
                    'groby+watch@chromium.org',
                    'rouslan+watch@chromium.org'],
     'website_settings': ['markusheintz@chromium.org'],
     'webkit': ['darin-cc@chromium.org'],
     'worker': ['jam@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
   },
 }