chromium/base/metrics/field_trial_param_associator.h

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_METRICS_FIELD_TRIAL_PARAM_ASSOCIATOR_H_
#define BASE_METRICS_FIELD_TRIAL_PARAM_ASSOCIATOR_H_

#include <map>
#include <string>
#include <utility>

#include "base/base_export.h"
#include "base/memory/singleton.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/field_trial_params.h"
#include "base/synchronization/lock.h"
#include "base/types/pass_key.h"

class AppShimController;

namespace base {

// Keeps track of the parameters of all field trials and ensures access to them
// is thread-safe.
class BASE_EXPORT FieldTrialParamAssociator { … };

}  // namespace base

#endif  // BASE_METRICS_FIELD_TRIAL_PARAM_ASSOCIATOR_H_