chromium/components/metrics/library_support/histogram_manager.h

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_METRICS_LIBRARY_SUPPORT_HISTOGRAM_MANAGER_H_
#define COMPONENTS_METRICS_LIBRARY_SUPPORT_HISTOGRAM_MANAGER_H_

#include <stdint.h>

#include <memory>
#include <vector>

#include "base/lazy_instance.h"
#include "base/metrics/histogram_flattener.h"
#include "base/metrics/histogram_snapshot_manager.h"
#include "base/synchronization/lock.h"
#include "third_party/metrics_proto/chrome_user_metrics_extension.pb.h"

namespace metrics {

// A HistogramManager instance is created by the app. It is the central
// controller for the acquisition of log data, and recording deltas for
// transmission to an external server. Public APIs are all thread-safe.
class HistogramManager : public base::HistogramFlattener { … };

}  // namespace metrics

#endif  // COMPONENTS_METRICS_LIBRARY_SUPPORT_HISTOGRAM_MANAGER_H_