cros: Enable new cras audio handler by default

chromeos/audio/mock_cras_audio_handler.h

+// 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.
+
+#ifndef CHROMEOS_AUDIO_MOCK_CRAS_AUDIO_HANDLER_H_
+#define CHROMEOS_AUDIO_MOCK_CRAS_AUDIO_HANDLER_H_
+
+#include "chromeos/audio/cras_audio_handler.h"
+
+namespace chromeos {
+
+// Mock class for CrasAudioHandler.
+class CHROMEOS_EXPORT MockCrasAudioHandler : public CrasAudioHandler {
+ public:
+  MockCrasAudioHandler();
+  virtual ~MockCrasAudioHandler();
+
+  virtual void AddAudioObserver(AudioObserver* observer) OVERRIDE;
+  virtual void RemoveAudioObserver(AudioObserver* observer) OVERRIDE;
+  virtual bool IsOutputMuted() OVERRIDE;
+  virtual bool IsInputMuted() OVERRIDE;
+  virtual int GetOutputVolumePercent() OVERRIDE;
+  virtual uint64 GetActiveOutputNode() const OVERRIDE;
+  virtual uint64 GetActiveInputNode() const OVERRIDE;
+  virtual void GetAudioDevices(AudioDeviceList* device_list) const OVERRIDE;
+  virtual bool GetActiveOutputDevice(AudioDevice* device) const OVERRIDE;
+  virtual bool has_alternative_input() const OVERRIDE;
+  virtual bool has_alternative_output() const OVERRIDE;
+  virtual void SetOutputVolumePercent(int volume_percent) OVERRIDE;
+  virtual void AdjustOutputVolumeByPercent(int adjust_by_percent) OVERRIDE;
+  virtual void SetOutputMute(bool mute_on) OVERRIDE;
+  virtual void SetInputMute(bool mute_on) OVERRIDE;
+  virtual void SetActiveOutputNode(uint64 node_id) OVERRIDE;
+  virtual void SetActiveInputNode(uint64 node_id) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockCrasAudioHandler);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_AUDIO_MOCK_CRAS_AUDIO_HANDLER_H_