Remove obsolete path of getSources.

content/content_browser.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
     '../net/net.gyp:net',
@@ skipping 1025 matching lines @@
       'browser/renderer_host/media/audio_input_device_manager.cc',
       'browser/renderer_host/media/audio_input_device_manager.h',
       'browser/renderer_host/media/audio_input_renderer_host.cc',
       'browser/renderer_host/media/audio_input_renderer_host.h',
       'browser/renderer_host/media/audio_input_sync_writer.cc',
       'browser/renderer_host/media/audio_input_sync_writer.h',
       'browser/renderer_host/media/audio_renderer_host.cc',
       'browser/renderer_host/media/audio_renderer_host.h',
       'browser/renderer_host/media/audio_sync_reader.cc',
       'browser/renderer_host/media/audio_sync_reader.h',
-      'browser/renderer_host/media/device_request_message_filter.cc',
-      'browser/renderer_host/media/device_request_message_filter.h',
       'browser/renderer_host/media/media_capture_devices_impl.cc',
       'browser/renderer_host/media/media_capture_devices_impl.h',
       'browser/renderer_host/media/media_stream_dispatcher_host.cc',
       'browser/renderer_host/media/media_stream_dispatcher_host.h',
       'browser/renderer_host/media/media_stream_manager.cc',
       'browser/renderer_host/media/media_stream_manager.h',
       'browser/renderer_host/media/media_stream_provider.h',
       'browser/renderer_host/media/media_stream_requester.h',
       'browser/renderer_host/media/media_stream_track_metrics_host.cc',
       'browser/renderer_host/media/media_stream_track_metrics_host.h',
@@ skipping 855 matching lines @@
       'sources': [
         'browser/media/cdm/browser_cdm_manager.cc',
         'browser/media/cdm/browser_cdm_manager.h',
         # This works on Android because enable_browser_cdms==1 on Android.
         'browser/media/media_web_contents_observer.cc',
         'browser/media/media_web_contents_observer.h',
       ],
     }],
   ],
 }