Fix WATCHLISTS entry for downloads_ui.

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 305 matching lines @@
       'filepath': 'chrome/browser/history/download_database',
     },
     'downloads_ext': {
       'filepath': 'chrome/browser/extensions/api/downloads/|'\
                   'chrome/common/extensions/api/downloads.*.idl',
     },
     'downloads_ui': {
       'filepath': 'chrome/browser/resources/downloads/|' \
                   'chrome/browser/ui/webui/.*downloads|' \
                   'chrome/browser/ui/views/download/|' \
-                  'chrome/browser/ui/cocoa/download/|' \
+                  'chrome/browser/ui/cocoa/download/'
     },
     'drive': {
       'filepath': 'chrome/browser/chromeos/drive/|' \
                   'chrome/browser/google_apis/'
     },
     'drive_resource_metadata': {
       'filepath': 'chrome/browser/chromeos/drive/resource_metadata'
     },
     'eme': {
       'filepath': 'components/cdm/|' \
@@ skipping 1328 matching lines @@
                           'yhirano+watch@chromium.org' ],
     'blink_workers': [ 'blink-worker-reviews@chromium.org',
                        'kinuko+worker@chromium.org',
                        'horo+watch@chromium.org',
                        'falken@chromium.org' ],
     'blink_wtf': [ 'mikhail.pozdnyakov@intel.com',
                    'blink-reviews-wtf@chromium.org' ],
     'blink_xmlhttprequest': [ 'tyoshino+watch@chromium.org' ],
   },
 }