variations_layers.h | Explore in Territory

// Copyright 2020 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_VARIATIONS_VARIATIONS_LAYERS_H_
#define COMPONENTS_VARIATIONS_VARIATIONS_LAYERS_H_

#include <map>
#include <optional>

#include "base/component_export.h"
#include "base/metrics/field_trial.h"
#include "base/types/optional_ref.h"
#include "components/variations/entropy_provider.h"
#include "components/variations/processed_study.h"
#include "components/variations/proto/layer.pb.h"
#include "components/variations/proto/variations_seed.pb.h"

namespace variations {

// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
enum class InvalidLayerReason { … };

// A view over the layers defined within a variations seed.
//
// A layer defines a collection of mutually exclusive members. For each client,
// at most one member will be assigned as its active member. Studies may be
// conditioned on a particular member being active, in order to avoid overlap
// with studies that require a different member to be active.
class COMPONENT_EXPORT(VARIATIONS) VariationsLayers { … };

}  // namespace variations

#endif  // COMPONENTS_VARIATIONS_VARIATIONS_LAYERS_H_
chromium/components/variations/variations_layers.h
