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// 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_METRICS_METRICS_SERVICE_OBSERVER_H_
#define COMPONENTS_METRICS_METRICS_SERVICE_OBSERVER_H_
#include "base/macros.h"
namespace metrics {
// MetricsServiceObserver receives notifications from MetricsService.
// An observer must be added, removed, and notified on the same thread.
class MetricsServiceObserver {
public:
// Called when a new MetricsLog is created.
virtual void OnDidCreateMetricsLog() = 0;
protected:
MetricsServiceObserver();
virtual ~MetricsServiceObserver();
private:
DISALLOW_COPY_AND_ASSIGN(MetricsServiceObserver);
};
} // namespace metrics
#endif // COMPONENTS_METRICS_METRICS_SERVICE_OBSERVER_H_