Add ALSA support to volume keys

chrome/chrome_browser.gypi

 # Copyright (c) 2010 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': [
     {
       'target_name': 'browser',
       'type': '<(library)',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 376 matching lines @@
         'browser/chromeos/notifications/balloon_view_host.cc',
         'browser/chromeos/notifications/balloon_view_host.h',
         'browser/chromeos/notifications/notification_panel.cc',
         'browser/chromeos/notifications/notification_panel.h',
         'browser/chromeos/notifications/system_notification.cc',
         'browser/chromeos/notifications/system_notification.h',
         'browser/chromeos/notifications/system_notification_factory.cc',
         'browser/chromeos/notifications/system_notification_factory.h',
         'browser/chromeos/audio_handler.cc',
         'browser/chromeos/audio_handler.h',
+        'browser/chromeos/audio_mixer_alsa.cc',
+        'browser/chromeos/audio_mixer_alsa.h',
+        'browser/chromeos/audio_mixer_base.h',
+        'browser/chromeos/audio_mixer_pulse.cc',
+        'browser/chromeos/audio_mixer_pulse.h',
         'browser/chromeos/boot_times_loader.cc',
         'browser/chromeos/boot_times_loader.h',
         'browser/chromeos/brightness_bubble.cc',
         'browser/chromeos/brightness_bubble.h',
         'browser/chromeos/brightness_observer.cc',
         'browser/chromeos/brightness_observer.h',
         'browser/chromeos/browser_main_chromeos.cc',
         'browser/chromeos/browser_main_chromeos.h',
         'browser/chromeos/cros_settings.cc',
         'browser/chromeos/cros_settings.h',
@@ skipping 310 matching lines @@
         'browser/chromeos/panels/panel_scroller_header.h',
         'browser/chromeos/plugin_selection_policy.cc',
         'browser/chromeos/plugin_selection_policy.h',
         'browser/chromeos/preferences.cc',
         'browser/chromeos/preferences.h',
         'browser/chromeos/proxy_config_service.h',
         'browser/chromeos/proxy_config_service_impl.cc',
         'browser/chromeos/proxy_config_service_impl.h',
         'browser/chromeos/proxy_cros_settings_provider.cc',
         'browser/chromeos/proxy_cros_settings_provider.h',
-        'browser/chromeos/pulse_audio_mixer.cc',
-        'browser/chromeos/pulse_audio_mixer.h',
         'browser/chromeos/setting_level_bubble.cc',
         'browser/chromeos/setting_level_bubble.h',
         'browser/chromeos/setting_level_bubble_view.cc',
         'browser/chromeos/setting_level_bubble_view.h',
         'browser/chromeos/status/clock_menu_button.cc',
         'browser/chromeos/status/clock_menu_button.h',
         'browser/chromeos/status/input_method_menu.cc',
         'browser/chromeos/status/input_method_menu.h',
         'browser/chromeos/status/input_method_menu_button.cc',
         'browser/chromeos/status/input_method_menu_button.h',
@@ skipping 3743 matching lines @@
       ],
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: