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// Copyright (c) 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_AUDIO_PREF_OBSERVER_H_
#define CHROMEOS_AUDIO_AUDIO_PREF_OBSERVER_H_
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "chromeos/chromeos_export.h"
class PrefRegistrySimple;
namespace chromeos {
// Interface for observing audio preference changes.
class CHROMEOS_EXPORT AudioPrefObserver {
public:
// Called when audio policy prefs changed.
virtual void OnAudioPolicyPrefChanged() = 0;
protected:
virtual ~AudioPrefObserver() {}
};
} // namespace chromeos
#endif // CHROMEOS_AUDIO_AUDIO_PREF_OBSERVER_H_
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