Add layout tests for the audio component of MediaStream Recording.

components/test_runner/mock_web_user_media_client.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.
 
 #include "components/test_runner/mock_web_user_media_client.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "components/test_runner/mock_constraints.h"
 #include "components/test_runner/web_test_delegate.h"
@@ skipping 147 matching lines @@
       delegate_->PostTask(new UserMediaRequestConstraintFailedTask(
           this, request, failed_constraint));
       return;
     }
 
     WebMediaStream stream;
     stream.initialize(WebVector<WebMediaStreamTrack>(),
                       WebVector<WebMediaStreamTrack>());
     stream.setExtraData(new MockExtraData());
 
-    if (request.audio()) {
+    if (request.audio() &&
+        !delegate_->AddMediaStreamAudioSourceAndTrack(&stream)) {
       WebMediaStreamSource source;
       source.initialize("MockAudioDevice#1",
                         WebMediaStreamSource::TypeAudio,
                         "Mock audio device",
                         false /* remote */,
                         true /* readonly */);
       WebMediaStreamTrack web_track;
       web_track.initialize(source);
       stream.addTrack(web_track);
     }
 
-    if (request.video() && !delegate_->AddMediaStreamSourceAndTrack(&stream)) {
+    if (request.video() &&
+        !delegate_->AddMediaStreamVideoSourceAndTrack(&stream)) {
       WebMediaStreamSource source;
       source.initialize("MockVideoDevice#1",
                         WebMediaStreamSource::TypeVideo,
                         "Mock video device",
                         false /* remote */, true /* readonly */);
       WebMediaStreamTrack web_track;
       web_track.initialize(source);
       stream.addTrack(web_track);
     }
 
@@ skipping 74 matching lines @@
   sources[i].initialize(WebString::fromUTF8(test_sources[i].id),
                         test_sources[i].kind,
                         WebString::fromUTF8(test_sources[i].label),
                         test_sources[i].facing);
   }
 
   delegate_->PostTask(new SourcesRequestTask(this, request, sources));
 }
 
 }  // namespace test_runner