Add new hotword extension for built-in hotword triggering.

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 332 matching lines @@
     },
     'gpu': {
       'filepath': 'gpu/',
     },
     'history_ui': {
       'filepath': 'chrome/browser/resources/history',
     },
     'hotword': {
       'filepath': 'chrome/browser/extensions/api/hotword_private/'\
                   '|chrome/browser/resources/hotword_helper/'\
+                  '|chrome/browser/resources/hotword/'\
                   '|chrome/browser/search/hotword*'\
                   '|chrome/test/data/extensions/api_test/hotword_private/',
     },
     'i18n': {
       'filepath': 'base/i18n/|base/string|l10n|icu|'\
         'locale_settings|encoding',
     },
     'imageburner': {
       'filepath': 'imageburner'
     },
@@ skipping 603 matching lines @@
     'webrtc_media': ['wjia+watch@chromium.org',
                      'mcasas+watch@chromium.org',
                      'posciak+watch@chromium.org'],
     'website_settings': ['markusheintz@chromium.org'],
     'worker': ['jam@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
   },
 }