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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_CHILD_CHILD_PROCESS_SYNTHETIC_TRIAL_SYNCER_H_
#define CONTENT_CHILD_CHILD_PROCESS_SYNTHETIC_TRIAL_SYNCER_H_
#include <string>
#include <vector>
#include "components/variations/synthetic_trials.h"
#include "content/common/content_export.h"
#include "content/common/synthetic_trial_configuration.mojom.h"
#include "mojo/public/cpp/bindings/binder_map.h"
#include "mojo/public/cpp/bindings/receiver.h"
namespace content {
// This class works in child processes and receives synthetic trial groups
// from SyntheticTrialSyncer running in the browser process via mojo.
//
// When receiving any message from SyntheticTrialSyncer, this class updates
// synthetic trial groups and updates crash keys with synthetic trials.
// This makes crash dumps from non-browser processes have synthetic trial
// information.
class CONTENT_EXPORT ChildProcessSyntheticTrialSyncer
: public mojom::SyntheticTrialConfiguration {
public:
static void Create(
mojo::PendingReceiver<mojom::SyntheticTrialConfiguration> receiver);
ChildProcessSyntheticTrialSyncer();
~ChildProcessSyntheticTrialSyncer() override;
ChildProcessSyntheticTrialSyncer(const ChildProcessSyntheticTrialSyncer&) =
delete;
ChildProcessSyntheticTrialSyncer& operator=(
const ChildProcessSyntheticTrialSyncer&) = delete;
ChildProcessSyntheticTrialSyncer(ChildProcessSyntheticTrialSyncer&&) = delete;
private:
friend class ChildProcessSyntheticTrialSyncerTest;
static std::unique_ptr<ChildProcessSyntheticTrialSyncer>
CreateInstanceForTesting();
// mojom::SyntheticTrialConfiguration:
void AddOrUpdateSyntheticTrialGroups(
std::vector<mojom::SyntheticTrialGroupPtr> trial_groups) override;
void RemoveSyntheticTrialGroups(
std::vector<mojom::SyntheticTrialGroupPtr> trial_groups) override;
void AddOrUpdateTrialGroupInternal(const std::string& trial_name,
const std::string& group_name);
std::vector<variations::SyntheticTrialGroup> trials_;
};
} // namespace content
#endif // CONTENT_CHILD_CHILD_PROCESS_SYNTHETIC_TRIAL_SYNCER_H_