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// Copyright 2025 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_FEATURE_OVERRIDES_H_
#define COMPONENTS_VARIATIONS_FEATURE_OVERRIDES_H_
#include <vector>
#include "base/component_export.h"
#include "base/feature_list.h"
#include "base/memory/raw_ref.h"
#include "base/metrics/field_trial.h"
namespace variations {
// Utility class for overriding feature states on a base::FeatureList.
class COMPONENT_EXPORT(VARIATIONS) FeatureOverrides {
public:
explicit FeatureOverrides(base::FeatureList& feature_list);
FeatureOverrides(const FeatureOverrides& other) = delete;
FeatureOverrides& operator=(const FeatureOverrides& other) = delete;
~FeatureOverrides();
// Enables a feature with WebView-specific override.
void EnableFeature(const base::Feature& feature);
// Disables a feature with WebView-specific override.
void DisableFeature(const base::Feature& feature);
// Enables or disable a feature with a field trial. This can be used for
// setting feature parameters.
void OverrideFeatureWithFieldTrial(
const base::Feature& feature,
base::FeatureList::OverrideState override_state,
base::FieldTrial* field_trial);
private:
struct FieldTrialOverride {
raw_ref<const base::Feature> feature;
base::FeatureList::OverrideState override_state;
raw_ptr<base::FieldTrial> field_trial;
};
raw_ref<base::FeatureList> feature_list_;
std::vector<base::FeatureList::FeatureOverrideInfo> overrides_;
std::vector<FieldTrialOverride> field_trial_overrides_;
};
} // namespace variations
#endif // COMPONENTS_VARIATIONS_FEATURE_OVERRIDES_H_
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