Add '+watch' to watchlist entry to facilitate filtering.

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 415 matching lines @@
     'android_infra': ['peter+watch@chromium.org',
                       'bulach+watch@chromium.org',
                       'yfriedman+watch@chromium.org'],
     'app_list': ['tfarina@chromium.org'],
     'appcache': ['michaeln@chromium.org'],
     'aura': ['ben+watch@chromium.org', 'sadrul@chromium.org'],
     'autofill': ['dhollowa+watch@chromium.org', 'isherman@chromium.org',
                  'dyu@chromium.org'],
     'automation': ['kkania@chromium.org',
                    'robertshield@chromium.org'],
-    'base': ['brettw-cc@chromium.org', 'erikwright@chromium.org'],
+    'base': ['brettw-cc@chromium.org', 'erikwright+watch@chromium.org'],
     'base_memory': ['gavinp+memory@chromium.org'],
     'browser_chromeos': ['davemoore+watch@chromium.org',
                          'stevenjb+watch@chromium.org',
                          'nkostylev+watch@chromium.org'],
     'browser_components': ['browser-components-watch@chromium.org'],
     'browser_compositor': ['backer@chromium.org', 'vollick@chromium.org',
                            'piman+watch@chromium.org'],
     'browser_main': ['brettw-cc@chromium.org'],
     'browser_resources': ['arv@chromium.org'],
     'browsing_data': ['markusheintz@chromium.org'],
@@ skipping 106 matching lines @@
                    'gbillock+watch@chromium.org',
                    'smckay+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'],
   },
 }