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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.
#include "chrome/browser/glic/host/glic_synthetic_trial_manager.h"
#include <algorithm>
#include <cstddef>
#include <ranges>
#include <string_view>
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
#include "components/variations/synthetic_trial_registry.h"
namespace glic {
GlicSyntheticTrialManager::GlicSyntheticTrialManager() = default;
GlicSyntheticTrialManager::~GlicSyntheticTrialManager() = default;
void GlicSyntheticTrialManager::SetSyntheticExperimentState(
const std::string& trial_name,
const std::string& group_name) {
// If browser is already registered in a conflicting group then discard the
// logs by marking them in a special group. This avoids combining logs from
// multiple groups from different profiles.
bool conflicting_group_registered =
synthetic_field_trial_groups_.count(trial_name) > 0 &&
synthetic_field_trial_groups_[trial_name] != group_name;
if (conflicting_group_registered) {
if (synthetic_field_trial_groups_[trial_name] != "MultiProfileDetected") {
base::UmaHistogramBoolean(
"Glic.ChromeClient.MultiProfileSyntheticTrialConflictDetected",
conflicting_group_registered);
}
ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial(
trial_name, "MultiProfileDetected",
variations::SyntheticTrialAnnotationMode::kCurrentLog);
synthetic_field_trial_groups_[trial_name] = "MultiProfileDetected";
} else {
ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial(
trial_name, group_name,
variations::SyntheticTrialAnnotationMode::kCurrentLog);
synthetic_field_trial_groups_[trial_name] = group_name;
}
}
} // namespace glic
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