Add new device ID unit tests to UserMediaClientImpl.

content/renderer/media/mock_media_stream_dispatcher.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.
 
 #ifndef CONTENT_RENDERER_MEDIA_MOCK_MEDIA_STREAM_DISPATCHER_H_
 #define CONTENT_RENDERER_MEDIA_MOCK_MEDIA_STREAM_DISPATCHER_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 30 matching lines @@
   int stop_audio_device_counter() const { return stop_audio_device_counter_; }
   int stop_video_device_counter() const { return stop_video_device_counter_; }
 
   const std::string& stream_label() const { return stream_label_;}
   const StreamDeviceInfoArray& audio_input_array() const {
     return audio_input_array_;
   }
   const StreamDeviceInfoArray& video_array() const { return video_array_; }
 
  private:
-  void AddAudioInputDeviceToArray(bool matched_output);
-  void AddVideoDeviceToArray(bool facing_user);
+  void AddAudioInputDeviceToArray(bool matched_output,
+                                  const std::string& device_id);
+  void AddVideoDeviceToArray(bool facing_user, const std::string& device_id);
 
   int audio_input_request_id_;
   base::WeakPtr<MediaStreamDispatcherEventHandler> event_handler_;
   int request_stream_counter_;
   int stop_audio_device_counter_;
   int stop_video_device_counter_;
 
   std::string stream_label_;
   int session_id_;
   bool test_same_id_;
   StreamDeviceInfoArray audio_input_array_;
   StreamDeviceInfoArray video_array_;
 
   DISALLOW_COPY_AND_ASSIGN(MockMediaStreamDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MOCK_MEDIA_STREAM_DISPATCHER_H_