Allow content embedders to create AudioManager.

media/media.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,
     # Override to dynamically link the cras (ChromeOS audio) library.
     'use_cras%': 0,
     # Option e.g. for Linux distributions to link pulseaudio directly
@@ skipping 1415 matching lines @@
     },
     {
       # GN version: //media/audio:unittests
       # For including the sources and configs in multiple test targets.
       'target_name': 'audio_test_config',
       'type': 'none',
       'direct_dependent_settings': {
         'sources': [
           'audio/audio_input_controller_unittest.cc',
           'audio/audio_input_unittest.cc',
-          'audio/audio_manager_factory_unittest.cc',
           'audio/audio_manager_unittest.cc',
           'audio/audio_output_controller_unittest.cc',
           'audio/audio_output_device_unittest.cc',
           'audio/audio_output_proxy_unittest.cc',
           'audio/audio_power_monitor_unittest.cc',
           'audio/audio_streams_tracker_unittest.cc',
           'audio/fake_audio_worker_unittest.cc',
           'audio/simple_sources_unittest.cc',
           'audio/virtual_audio_input_stream_unittest.cc',
           'audio/virtual_audio_output_stream_unittest.cc',
@@ skipping 628 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }