Add OAuth2 authentication for some voice transcription requests.

chrome/chrome_browser_ui.gypi

 # Copyright 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.
 
 {
   'variables': {
     'chrome_browser_ui_non_ios_sources': [
       'browser/ui/accelerator_utils.h',
       'browser/ui/android/android_about_app_info.cc',
       'browser/ui/android/android_about_app_info.h',
@@ skipping 1185 matching lines @@
       'browser/ui/app_list/search/suggestions/suggestions_search_provider.cc',
       'browser/ui/app_list/search/suggestions/suggestions_search_provider.h',
       'browser/ui/app_list/search/suggestions/url_suggestion_result.cc',
       'browser/ui/app_list/search/suggestions/url_suggestion_result.h',
       'browser/ui/app_list/search/webstore/webstore_installer.cc',
       'browser/ui/app_list/search/webstore/webstore_installer.h',
       'browser/ui/app_list/search/webstore/webstore_provider.cc',
       'browser/ui/app_list/search/webstore/webstore_provider.h',
       'browser/ui/app_list/search/webstore/webstore_result.cc',
       'browser/ui/app_list/search/webstore/webstore_result.h',
+      'browser/ui/app_list/speech_auth_helper.cc',
+      'browser/ui/app_list/speech_auth_helper.h',
       'browser/ui/app_list/speech_recognizer.cc',
       'browser/ui/app_list/speech_recognizer.h',
       'browser/ui/app_list/speech_recognizer_delegate.h',
       'browser/ui/app_list/start_page_observer.h',
       'browser/ui/app_list/start_page_service.cc',
       'browser/ui/app_list/start_page_service.h',
       'browser/ui/app_list/start_page_service_factory.cc',
       'browser/ui/app_list/start_page_service_factory.h',
       'browser/ui/views/app_list/app_list_dialog_container.cc',
       'browser/ui/views/app_list/app_list_dialog_container.h',
@@ skipping 1885 matching lines @@
         ['OS!="android" and OS!="ios"', {
           'dependencies': [
             '../device/bluetooth/bluetooth.gyp:device_bluetooth',
           ],
           'sources': [ '<@(chrome_browser_ui_non_mobile_sources)' ],
         }],
       ],
     },
   ],
 }