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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 CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_
#define CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_
#include "base/macros.h"
class MetricsServiceObserver;
// This class limits and documents access to metrics service helper methods.
// These methods are protected so each user has to inherit own program-specific
// specialization and enable access there by declaring friends.
class MetricsServiceAccessor {
protected:
// Constructor declared as protected to enable inheritance. Decendants should
// disallow instantiation.
MetricsServiceAccessor() {}
// Registers/unregisters |observer| to receive MetricsLog notifications
// from metrics service.
static void AddMetricsServiceObserver(MetricsServiceObserver* observer);
static void RemoveMetricsServiceObserver(MetricsServiceObserver* observer);
private:
DISALLOW_COPY_AND_ASSIGN(MetricsServiceAccessor);
};
#endif // CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_
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