Implement GetUserMedia device ID constraint processing in the renderer.

content/common/media/media_stream_messages.h

 // 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.
 
 // IPC messages for the media streaming.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 
 #include "content/common/content_export.h"
@@ skipping 11 matching lines @@
 
 IPC_ENUM_TRAITS_MAX_VALUE(content::VideoFacingMode,
                           content::NUM_MEDIA_VIDEO_FACING_MODE - 1)
 
 IPC_ENUM_TRAITS_MAX_VALUE(content::MediaStreamRequestResult,
                           content::NUM_MEDIA_REQUEST_RESULTS - 1)
 
 IPC_STRUCT_TRAITS_BEGIN(content::TrackControls)
   IPC_STRUCT_TRAITS_MEMBER(requested)
   IPC_STRUCT_TRAITS_MEMBER(stream_source)
-  IPC_STRUCT_TRAITS_MEMBER(device_ids)
-  IPC_STRUCT_TRAITS_MEMBER(alternate_device_ids)
+  IPC_STRUCT_TRAITS_MEMBER(device_id)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::StreamControls)
   IPC_STRUCT_TRAITS_MEMBER(audio)
   IPC_STRUCT_TRAITS_MEMBER(video)
   IPC_STRUCT_TRAITS_MEMBER(hotword_enabled)
   IPC_STRUCT_TRAITS_MEMBER(disable_local_echo)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::StreamDeviceInfo)
@@ skipping 89 matching lines @@
 // connected video sinks meet the requirement of output protection.).
 // Note: the browser process only trusts the |is_sucure| value in this IPC
 // message if it's comimg from a trusted, whitelisted extension. Extensions run
 // in separate render processes. So it shouldn't be possible, for example, for
 // a user's visit to a malicious web page to compromise a render process running
 // a trusted extension to make it report falsehood in this IPC message.
 IPC_MESSAGE_CONTROL3(MediaStreamHostMsg_SetCapturingLinkSecured,
                      int,                      /* session_id */
                      content::MediaStreamType, /* type */
                      bool /* is_secure */)