Adding an interface to allow extention of the audio player for CRD and iOS.

remoting/client/fake_audio_consumer.h

Index: remoting/client/fake_audio_consumer.h
diff --git a/remoting/client/fake_audio_consumer.h b/remoting/client/fake_audio_consumer.h
new file mode 100644
index 0000000000000000000000000000000000000000..085a4d740d9b871c6483253d14238bfcb9d7a2a5
--- /dev/null
+++ b/remoting/client/fake_audio_consumer.h
@@ -0,0 +1,39 @@
+// Copyright 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 REMOTING_CLIENT_FAKE_AUDIO_CONSUMER_H_
+#define REMOTING_CLIENT_FAKE_AUDIO_CONSUMER_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <list>
+#include <memory>
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "remoting/client/audio_consumer.h"
+#include "remoting/proto/audio.pb.h"
+
+namespace remoting {
+
+class FakeAudioConsumer : public AudioConsumer {
+ public:
+  FakeAudioConsumer();
+  ~FakeAudioConsumer() override;
+
+  base::WeakPtr<FakeAudioConsumer> GetWeakPtr();
+
+  // AudioConsumer implementation.
+  void AddAudioPacket(std::unique_ptr<AudioPacket> packet) override;
+
+ private:
+  base::WeakPtrFactory<FakeAudioConsumer> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeAudioConsumer);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_CLIENT_FAKE_AUDIO_CONSUMER_H_