Check policy when checking device access for enumerating devices.

chrome/chrome_browser.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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 656 matching lines @@
       'browser/media/desktop_streams_registry.cc',
       'browser/media/desktop_streams_registry.h',
       'browser/media/media_capture_devices_dispatcher.cc',
       'browser/media/media_capture_devices_dispatcher.h',
       'browser/media/media_device_id_salt.cc',
       'browser/media/media_device_id_salt.h',
       'browser/media/media_stream_capture_indicator.cc',
       'browser/media/media_stream_capture_indicator.h',
       'browser/media/media_stream_devices_controller.cc',
       'browser/media/media_stream_devices_controller.h',
+      'browser/media/media_stream_devices_helper.cc',
+      'browser/media/media_stream_devices_helper.h',
       'browser/media/media_stream_infobar_delegate.cc',
       'browser/media/media_stream_infobar_delegate.h',
       'browser/media/midi_permission_context.cc',
       'browser/media/midi_permission_context.h',
       'browser/media/midi_permission_context_factory.cc',
       'browser/media/midi_permission_context_factory.h',
       'browser/media/midi_permission_infobar_delegate.cc',
       'browser/media/midi_permission_infobar_delegate.h',
       'browser/media/native_desktop_media_list.cc',
       'browser/media/native_desktop_media_list.h',
@@ skipping 2899 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }