Add generic interfaces for the sinks of the media stream audio track

content/public/renderer/media_stream_audio_sink.cc

Index: content/public/renderer/media_stream_audio_sink.cc
diff --git a/content/public/renderer/media_stream_audio_sink.cc b/content/public/renderer/media_stream_audio_sink.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6bbb7c1a91f9554b18f45ef7e0865f874ee556a3
--- /dev/null
+++ b/content/public/renderer/media_stream_audio_sink.cc
@@ -0,0 +1,28 @@
+// Copyright 2013 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 "content/public/renderer/media_stream_audio_sink.h"
+
+#include "base/logging.h"
+#include "content/renderer/media/webrtc_local_audio_track.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
+
+#include "third_party/libjingle/source/talk/app/webrtc/mediaconstraintsinterface.h"
+
+namespace content {
+
+void AddToAudioTrack(MediaStreamAudioSink* sink,
+                     const blink::WebMediaStreamTrack& track) {
+  DCHECK(track.source().type() == blink::WebMediaStreamSource::TypeAudio);
+  // TODO(xians): Implement this.

[tommi (sloooow) - chröme, 2013/11/28 09:12:11]

NOTIMPLEMENTED?

[no longer working on chromium, 2013/11/28 17:27:18]

Implemented now.

+}
+
+void RemoveFromAudioTrack(MediaStreamAudioSink* sink,
+                          const blink::WebMediaStreamTrack& track) {
+  DCHECK(track.source().type() == blink::WebMediaStreamSource::TypeAudio);
+  // TODO(xians): Implement this.
+}
+
+}  // namespace content