Fix the volume controlling behaviors.

chrome/chrome_tests.gypi

 # 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 2828 matching lines @@
         'browser/ui/panels/panel_app_browsertest.cc',
         'browser/ui/panels/panel_browser_view_browsertest.cc',
         'browser/ui/prefs/prefs_tab_helper_browsertest.cc',
         'browser/ui/startup/startup_browser_creator_browsertest.cc',
         'browser/ui/tab_modal_confirm_dialog_browsertest_mac.mm',
         'browser/ui/tab_modal_confirm_dialog_browsertest.cc',
         'browser/ui/tab_modal_confirm_dialog_browsertest.h',
         'browser/ui/views/ash/browser_non_client_frame_view_ash_browsertest.cc',
         'browser/ui/views/ash/caps_lock_handler_browsertest.cc',
         'browser/ui/views/ash/launcher/launcher_favicon_loader_browsertest.cc',
+        'browser/ui/views/ash/volume_controller_chromeos_browsertest.cc',
         'browser/ui/views/browser_actions_container_browsertest.cc',
         'browser/ui/views/constrained_window_views_browsertest.cc',
         'browser/ui/views/frame/app_non_client_frame_view_aura_browsertest.cc',
         'browser/ui/views/frame/browser_view_browsertest.cc',
         'browser/ui/views/select_file_dialog_extension_browsertest.cc',
         'browser/ui/views/sync/one_click_signin_bubble_view_browsertest.cc',
         'browser/ui/views/web_dialog_view_browsertest.cc',
         'browser/ui/webui/chrome_url_data_manager_browsertest.cc',
         'browser/ui/webui/help/help_browsertest.js',
         'browser/ui/webui/ntp/most_visited_browsertest.cc',
@@ skipping 1762 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }