chromium/components/component_updater/component_installer.h

// Copyright 2014 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_COMPONENT_UPDATER_COMPONENT_INSTALLER_H_
#define COMPONENTS_COMPONENT_UPDATER_COMPONENT_INSTALLER_H_

#include <stdint.h>

#include <memory>
#include <optional>
#include <string>
#include <vector>

#include "base/files/file_path.h"
#include "base/functional/callback_forward.h"
#include "base/gtest_prod_util.h"
#include "base/memory/ref_counted.h"
#include "base/sequence_checker.h"
#include "base/task/task_traits.h"
#include "base/values.h"
#include "base/version.h"
#include "components/update_client/persisted_data.h"
#include "components/update_client/update_client.h"

namespace base {
class SequencedTaskRunner;
}  // namespace base

namespace component_updater {

// Version "0.0.0.0" corresponds to no installed version. By the server's
// conventions, we represent it as a dotted quad.
extern const char kNullVersion[];

struct ComponentRegistration;
class ComponentUpdateService;

RegisterCallback;

// Components should use a ComponentInstaller by defining a class that
// implements the members of ComponentInstallerPolicy, and then registering a
// ComponentInstaller that has been constructed with an instance of that
// class.
class ComponentInstallerPolicy { … };

// Defines the installer for Chrome components. The behavior of this class is
// controlled by an instance of ComponentInstallerPolicy, at construction time.
class ComponentInstaller final : public update_client::CrxInstaller { … };

}  // namespace component_updater

#endif  // COMPONENTS_COMPONENT_UPDATER_COMPONENT_INSTALLER_H_