Switch Audio Preferences to per device.

chromeos/chromeos.gyp

 # 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': {
     'chromium_code': 1,
   },
   'includes': [
     'chromeos_tools.gypi'
@@ skipping 14 matching lines @@
         'ime/input_method.gyp:gencode',
         'power_manager_proto',
         'video_activity_update_proto',
       ],
       'defines': [
         'CHROMEOS_IMPLEMENTATION',
       ],
       'sources': [
         'audio/audio_device.cc',
         'audio/audio_device.h',
+        'audio/audio_devices_pref_handler.h',
         'audio/audio_pref_observer.h',
         'audio/audio_pref_handler.h',
         'audio/cras_audio_handler.cc',
         'audio/cras_audio_handler.h',
         'audio/mock_cras_audio_handler.cc',
         'audio/mock_cras_audio_handler.h',
         'audio/cras_audio_switch_handler.cc',
         'audio/cras_audio_switch_handler.h',
         'attestation/attestation_constants.cc',
         'attestation/attestation_constants.h',
@@ skipping 513 matching lines @@
         '../third_party/cros_system_api/dbus/video_activity_update.proto',
       ],
       'variables': {
         'proto_in_dir': '../third_party/cros_system_api/dbus/',
         'proto_out_dir': 'chromeos/dbus',
       },
       'includes': ['../build/protoc.gypi'],
     },
   ],
 }