Looking up device id by session id for AudioRendererMixerInput

media/base/audio_renderer_mixer_sink.h

Index: media/base/audio_renderer_mixer_sink.h
diff --git a/media/base/audio_renderer_mixer_sink.h b/media/base/audio_renderer_mixer_sink.h
new file mode 100644
index 0000000000000000000000000000000000000000..58418fd2a875b2680f00581d7d561674daef084b
--- /dev/null
+++ b/media/base/audio_renderer_mixer_sink.h
@@ -0,0 +1,24 @@
+// Copyright (c) 2016 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 MEDIA_BASE_AUDIO_RENDERER_MIXER_SINK_H_
+#define MEDIA_BASE_AUDIO_RENDERER_MIXER_SINK_H_
+
+#include <string>
+
+#include "media/base/audio_renderer_sink.h"
+
+namespace media {
+
+// Special sink to be used by AudioRendererMixer
+class AudioRendererMixerSink : public AudioRendererSink {

[Guido Urdaneta, 2016/03/08 14:53:09]

Why not add GetDeviceId() to OutputDevice instead of introducing a new interface
just to provide the device ID, especially considering that a device ID looks
more related to an OutputDevice than to a Mixer.

[o1ka, 2016/04/05 15:13:38]

Addressed in another CL

+ public:
+  virtual std::string GetDeviceId() = 0;
+
+ protected:
+  ~AudioRendererMixerSink() override{};

[Guido Urdaneta, 2016/03/08 14:53:09]

space after override.

+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_AUDIO_RENDERER_MIXER_SINK_H_