1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef COMPONENTS_METRICS_METRICS_SERVICE_OBSERVER_H_
6 #define COMPONENTS_METRICS_METRICS_SERVICE_OBSERVER_H_
8 #include "base/macros.h"
10 // MetricsServiceObserver receives notifications from MetricsService.
11 // An observer must be added, removed, and notified on the same thread.
12 class MetricsServiceObserver {
14 // Called when a new MetricsLog is created.
15 virtual void OnDidCreateMetricsLog() = 0;
18 MetricsServiceObserver();
19 virtual ~MetricsServiceObserver();
22 DISALLOW_COPY_AND_ASSIGN(MetricsServiceObserver);
25 #endif // COMPONENTS_METRICS_METRICS_SERVICE_OBSERVER_H_