Add OAuth2 authentication for some voice transcription requests.

chrome/chrome_tests_unit.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_unit_tests_sources': [
       '../apps/saved_files_service_unittest.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.h',
       '../components/autofill/content/renderer/test_password_generation_agent.cc',
@@ skipping 872 matching lines @@
       'browser/ui/app_list/app_list_positioner_unittest.cc',
       'browser/ui/app_list/app_list_service_mac_unittest.mm',
       'browser/ui/app_list/app_list_service_unittest.cc',
       'browser/ui/app_list/app_list_shower_views_unittest.cc',
       'browser/ui/app_list/app_list_test_util.cc',
       'browser/ui/app_list/app_list_test_util.h',
       'browser/ui/app_list/extension_app_model_builder_unittest.cc',
       'browser/ui/app_list/model_pref_updater_unittest.cc',
       'browser/ui/app_list/profile_loader_unittest.cc',
       'browser/ui/app_list/search/suggestions/suggestions_search_provider_unittest.cc',
+      'browser/ui/app_list/speech_auth_helper_unittest.cc',
       'browser/ui/app_list/test/fake_profile.cc',
       'browser/ui/app_list/test/fake_profile.h',
       'browser/ui/app_list/test/fake_profile_store.cc',
       'browser/ui/app_list/test/fake_profile_store.h',
       'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
       'browser/ui/ash/chrome_screenshot_grabber_unittest.cc',
       'browser/ui/ash/ime_controller_chromeos_unittest.cc',
       'browser/ui/ash/accessibility/ax_tree_source_ash_unittest.cc',
       'browser/ui/ash/launcher/chrome_launcher_controller_unittest.cc',
       'browser/ui/ash/launcher/launcher_context_menu_unittest.cc',
@@ skipping 2042 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }