Enable media stream layout test with content_shell.

webkit/support/test_media_stream_client.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.
 
 // TestMediaStreamClient is an implementation of webkit_media::MediaStreamClient
 // and used with WebKit::WebUserMediaClientMock to provide corresponding video
 // decoder to media pipeline.
 
+// TODO(wjia): remove this class once
+// https://bugs.webkit.org/show_bug.cgi?id=113633 is fixed, since it has been
+// moved into webkit/mocks.
+
 #ifndef WEBKIT_SUPPORT_TEST_MEDIA_STREAM_CLIENT_H_
 #define WEBKIT_SUPPORT_TEST_MEDIA_STREAM_CLIENT_H_
 
 #include "base/callback_forward.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebURL.h"
 #include "webkit/media/media_stream_client.h"
 
 namespace webkit_media {
 class MediaStreamAudioRenderer;
 }
@@ skipping 11 matching lines @@
       const GURL& url,
       const base::Closure& error_cb,
       const webkit_media::VideoFrameProvider::RepaintCB& repaint_cb) OVERRIDE;
   virtual scoped_refptr<webkit_media::MediaStreamAudioRenderer>
       GetAudioRenderer(const GURL& url) OVERRIDE;
 };
 
 }  // namespace webkit_support
 
 #endif  // WEBKIT_SUPPORT_TEST_MEDIA_STREAM_CLIENT_H_