Implement Linux media notifier.

content/content_tests.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': 'test_support_content',
       'type': 'static_library',
       'defines!': ['CONTENT_IMPLEMENTATION'],
@@ skipping 206 matching lines @@
         'browser/geolocation/wifi_data_provider_common_unittest.cc',
         'browser/geolocation/wifi_data_provider_linux_unittest.cc',
         'browser/geolocation/wifi_data_provider_unittest_win.cc',
         'browser/geolocation/win7_location_api_unittest_win.cc',
         'browser/geolocation/win7_location_provider_unittest_win.cc',
         'browser/host_zoom_map_impl_unittest.cc',
         'browser/in_process_webkit/dom_storage_unittest.cc',
         'browser/in_process_webkit/indexed_db_quota_client_unittest.cc',
         'browser/in_process_webkit/webkit_thread_unittest.cc',
         'browser/mach_broker_mac_unittest.cc',
+        'browser/media_device_notifications_linux_unittest.cc',
         'browser/notification_service_impl_unittest.cc',
         'browser/plugin_loader_posix_unittest.cc',
         'browser/renderer_host/accelerated_plugin_view_mac_unittest.mm',
         'browser/renderer_host/gtk_key_bindings_handler_unittest.cc',
         'browser/renderer_host/media/audio_input_device_manager_unittest.cc',
         'browser/renderer_host/media/audio_renderer_host_unittest.cc',
         'browser/renderer_host/media/media_stream_dispatcher_host_unittest.cc',
         'browser/renderer_host/media/video_capture_host_unittest.cc',
         'browser/renderer_host/media/video_capture_manager_unittest.cc',
         'browser/renderer_host/render_view_host_unittest.cc',
@@ skipping 244 matching lines @@
           ],
           'sources': [
             'common/gpu/media/video_decode_accelerator_unittest.cc',
           ],
         }
       ],
     },
    ],
   ],
 }