[cast/test] Use AudioConverter in FakeMediaSource to play back 6-channel WEBM's.

media/cast/test/simulator.cc

 // Copyright 2014 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.
 
 // Simulate end to end streaming.
 //
 // Input:
 // --source=
 //   WebM used as the source of video and audio frames.
 // --output=
@@ skipping 462 matching lines @@
     sender_to_receiver.Initialize(
         scoped_ptr<test::PacketPipe>(),
         transport_receiver->PacketReceiverForTesting(), task_runner,
         &testing_clock);
   }
 
   // Initialize a fake media source and a tracker to encoded video frames.
   const bool quality_test = !metrics_output_path.empty();
   FakeMediaSource media_source(task_runner,
                                &testing_clock,
+                               audio_sender_config,
                                video_sender_config,
                                quality_test);
   scoped_ptr<EncodedVideoFrameTracker> video_frame_tracker;
   if (quality_test) {
     video_frame_tracker.reset(new EncodedVideoFrameTracker(&media_source));
     sender_env->Logging()->AddRawEventSubscriber(video_frame_tracker.get());
   }
 
   // Quality metrics computed for each frame decoded.
   GotVideoFrameOutput metrics_output;
@@ skipping 272 matching lines @@
   values.SetString("sim-id", sim_id);
 
   std::string extra_data;
   base::JSONWriter::Write(&values, &extra_data);
 
   // Run.
   media::cast::RunSimulation(source_path, log_output_path, metrics_output_path,
                              yuv_output_path, extra_data, model);
   return 0;
 }