Refactor how the updater state data is serialized in update checks.

components/component_updater/updater_state_win.h

-// Copyright (c) 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_COMPONENT_UPDATER_UPDATER_STATE_WIN_H_
-#define COMPONENTS_COMPONENT_UPDATER_UPDATER_STATE_WIN_H_
-
-#include <memory>
-#include <string>
-
-#include "base/gtest_prod_util.h"
-#include "base/time/time.h"
-#include "base/version.h"
-#include "components/update_client/update_client.h"
-
-namespace component_updater {
-
-// TODO(sorin): implement this in terms of
-// chrome/installer/util/google_update_settings (crbug.com/615187).
-class UpdaterState {
- public:
-  static std::unique_ptr<UpdaterState> Create(bool is_machine);
-
-  update_client::InstallerAttributes MakeInstallerAttributes() const;
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(UpdaterStateTest, MakeInstallerAttributes);
-
-  explicit UpdaterState(bool is_machine);
-
-  // This function is best-effort. It updates the class members with
-  // the relevant values that could be retrieved.
-  void ReadState();
-
-  static base::Version GetGoogleUpdateVersion(bool is_machine);
-  static bool IsAutoupdateCheckEnabled();
-  static bool IsJoinedToDomain();
-  static base::Time GetGoogleUpdateLastStartedAU(bool is_machine);
-  static base::Time GetGoogleUpdateLastChecked(bool is_machine);
-  static base::Time GetGoogleUpdateTimeValue(bool is_machine,
-                                             const wchar_t* value_name);
-  static int GetChromeUpdatePolicy();
-
-  static std::string NormalizeTimeDelta(const base::TimeDelta& delta);
-
-  bool is_machine_;
-  base::Version google_update_version_;
-  base::Time last_autoupdate_started_;
-  base::Time last_checked_;
-  bool is_joined_to_domain_ = false;
-  bool is_autoupdate_check_enabled_ = false;
-  int chrome_update_policy_ = 0;
-};
-
-}  // namespace component_updater
-
-#endif  // COMPONENTS_COMPONENT_UPDATER_UPDATER_STATE_WIN_H_