Switch Audio Preferences to per device.

chrome/chrome_browser_chromeos.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.
 
 {
   'targets': [
     {
       'target_name': 'browser_chromeos',
       'type': 'static_library',
@@ skipping 116 matching lines @@
         'browser/chromeos/app_mode/kiosk_app_update_service.cc',
         'browser/chromeos/app_mode/kiosk_app_update_service.h',
         'browser/chromeos/app_mode/kiosk_oem_manifest_parser.cc',
         'browser/chromeos/app_mode/kiosk_oem_manifest_parser.h',
         'browser/chromeos/app_mode/startup_app_launcher.cc',
         'browser/chromeos/app_mode/startup_app_launcher.h',
         'browser/chromeos/attestation/attestation_ca_client.cc',
         'browser/chromeos/attestation/attestation_ca_client.h',
         'browser/chromeos/attestation/attestation_policy_observer.cc',
         'browser/chromeos/attestation/attestation_policy_observer.h',
+        'browser/chromeos/audio/audio_devices_pref_handler_impl.cc',
+        'browser/chromeos/audio/audio_devices_pref_handler_impl.h',
         'browser/chromeos/audio/audio_handler.cc',
         'browser/chromeos/audio/audio_handler.h',
         'browser/chromeos/audio/audio_pref_handler_impl.cc',
         'browser/chromeos/audio/audio_pref_handler_impl.h',
         'browser/chromeos/audio/audio_mixer.h',
         'browser/chromeos/audio/audio_mixer_alsa.cc',
         'browser/chromeos/audio/audio_mixer_alsa.h',
         'browser/chromeos/audio/audio_mixer_cras.cc',
         'browser/chromeos/audio/audio_mixer_cras.h',
         'browser/chromeos/background/ash_user_wallpaper_delegate.cc',
@@ skipping 770 matching lines @@
         'browser/chromeos/attestation/attestation_key_payload.proto',
       ],
       'variables': {
         'proto_in_dir': 'browser/chromeos/attestation',
         'proto_out_dir': 'chrome/browser/chromeos/attestation',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }