chromium/components/metrics/metrics_service.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.

// This file defines a service that collects information about the user
// experience in order to help improve future versions of the app.

#ifndef COMPONENTS_METRICS_METRICS_SERVICE_H_
#define COMPONENTS_METRICS_METRICS_SERVICE_H_

#include <stdint.h>

#include <map>
#include <memory>
#include <string>

#include "base/callback_list.h"
#include "base/functional/bind.h"
#include "base/functional/callback_forward.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_flattener.h"
#include "base/metrics/histogram_snapshot_manager.h"
#include "base/metrics/statistics_recorder.h"
#include "base/metrics/user_metrics.h"
#include "base/observer_list.h"
#include "base/scoped_observation.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "components/metrics/delegating_provider.h"
#include "components/metrics/metrics_log.h"
#include "components/metrics/metrics_log_store.h"
#include "components/metrics/metrics_logs_event_manager.h"
#include "components/metrics/metrics_provider.h"
#include "components/metrics/metrics_reporting_service.h"

class PrefService;
class PrefRegistrySimple;
FORWARD_DECLARE_TEST(ChromeMetricsServiceClientTest,
                     TestRegisterMetricsServiceProviders);
FORWARD_DECLARE_TEST(IOSChromeMetricsServiceClientTest,
                     TestRegisterMetricsServiceProviders);

namespace variations {
class SyntheticTrialRegistry;
}

namespace metrics {

class MetricsRotationScheduler;
class MetricsServiceClient;
class MetricsServiceObserver;
class MetricsStateManager;

// See metrics_service.cc for a detailed description.
class MetricsService { … };

}  // namespace metrics

#endif  // COMPONENTS_METRICS_METRICS_SERVICE_H_