Use AudioStreamMonitor to control power save blocking.

chrome/chrome_tests_unit.gypi

 # Copyright 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': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1014 matching lines @@
         'browser/install_verification/win/module_list_unittest.cc',
         'browser/install_verification/win/module_verification_test.cc',
         'browser/install_verification/win/module_verification_test.h',
         'browser/invalidation/gcm_invalidation_bridge_unittest.cc',
         'browser/invalidation/invalidation_service_android_unittest.cc',
         'browser/invalidation/invalidator_storage_unittest.cc',
         'browser/invalidation/ticl_profile_settings_provider_unittest.cc',
         'browser/io_thread_unittest.cc',
         'browser/logging_chrome_unittest.cc',
         'browser/mac/keystone_glue_unittest.mm',
-        'browser/media/audio_stream_monitor_unittest.cc',
-        'browser/media/cast_transport_host_filter_unittest.cc',
         'browser/media/desktop_media_list_ash_unittest.cc',
         'browser/media/native_desktop_media_list_unittest.cc',
         'browser/media/webrtc_log_uploader_unittest.cc',
         'browser/media/webrtc_log_util_unittest.cc',
         'browser/media/webrtc_rtp_dump_handler_unittest.cc',
         'browser/media/webrtc_rtp_dump_writer_unittest.cc',
         'browser/media_galleries/fileapi/native_media_file_util_unittest.cc',
         'browser/media_galleries/gallery_watch_manager_unittest.cc',
         'browser/media_galleries/linux/mtp_device_object_enumerator_unittest.cc',
         'browser/media_galleries/mac/mtp_device_delegate_impl_mac_unittest.mm',
@@ skipping 1816 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }