Removes Experimental hotword-always-on feature.

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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 2708 matching lines @@
           'dependencies': [
             '../third_party/cld/cld.gyp:cld',
           ],
         }],
         ['enable_app_list==1', {
           'dependencies': [
             '../ui/app_list/app_list.gyp:app_list_test_support',
           ],
           'sources': [
             'browser/ui/app_list/extension_app_model_builder_unittest.cc',
-            'browser/ui/app_list/hotword_background_activity_monitor_unittest.cc',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
           ],
         }],
       ],
     },
     {
       'target_name': 'chrome_app_unittests',
       'type': 'executable',
       'dependencies': [
         # unit tests should only depend on
@@ skipping 153 matching lines @@
             'browser/ui/app_list/test/fake_profile_store.h',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
             'browser/ui/views/app_list/linux/app_list_linux_unittest.cc',
             'browser/ui/views/app_list/win/app_list_win_unittest.cc',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }