Redesign the copresence audio handlers.

components/copresence/mediums/audio/audio_manager_stub.h

Index: components/copresence/mediums/audio/audio_manager_stub.h
diff --git a/components/copresence/mediums/audio/audio_manager_stub.h b/components/copresence/mediums/audio/audio_manager_stub.h
new file mode 100644
index 0000000000000000000000000000000000000000..8694fbab237b899a2ae6b2df48fe842a9b4452d5
--- /dev/null
+++ b/components/copresence/mediums/audio/audio_manager_stub.h
@@ -0,0 +1,46 @@
+// 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.
+
+#ifndef COMPONENTS_COPRESENCE_MEDIUMS_AUDIO_AUDIO_MANAGER_STUB_H_
+#define COMPONENTS_COPRESENCE_MEDIUMS_AUDIO_AUDIO_MANAGER_STUB_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "components/copresence/mediums/audio/audio_manager.h"
+#include "components/copresence/public/copresence_constants.h"
+
+namespace copresence {
+
+class AudioManagerStub final : public AudioManager {
+ public:
+  AudioManagerStub();
+  virtual ~AudioManagerStub();
+
+  // AudioManager overrides:
+  virtual void Initialize(const DecodeSamplesCallback& decode_cb,
+                          const EncodeTokenCallback& encode_cb) override;
+  virtual void StartPlaying(AudioType type) override;
+  virtual void StopPlaying(AudioType type) override;
+  virtual void StartRecording(AudioType type) override;
+  virtual void StopRecording(AudioType type) override;
+  virtual void SetToken(AudioType type,
+                        const std::string& url_unsafe_token) override;
+  virtual const std::string& GetToken(AudioType type) override;
+  virtual bool IsRecording(AudioType type) override;
+  virtual bool IsPlaying(AudioType type) override;
+
+ private:
+  // Indexed using enum AudioType.
+  bool playing_[2];
+  bool recording_[2];
+
+  std::string token_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioManagerStub);
+};
+
+}  // namespace copresence
+
+#endif  // COMPONENTS_COPRESENCE_MEDIUMS_AUDIO_AUDIO_MANAGER_STUB_H_