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// Copyright 2017 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_EXO_DATA_SOURCE_OBSERVER_H_
#define COMPONENTS_EXO_DATA_SOURCE_OBSERVER_H_
#include <string>
namespace exo {
class DataSource;
// Handles events on data devices in context-specific ways.
class DataSourceObserver {
public:
// Called at the top of the data device's destructor, to give observers a
// chance to remove themselves.
virtual void OnDataSourceDestroying(DataSource* source) = 0;
protected:
virtual ~DataSourceObserver() {}
};
} // namespace exo
#endif // COMPONENTS_EXO_DATA_SOURCE_OBSERVER_H_
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