Revert of Create a new AccountTrackerService

components/signin/core/browser/account_tracker_service.h

-// Copyright 2014 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_SIGNIN_CORE_BROWSER_ACCOUNT_TRACKER_SERVICE_H_
-#define COMPONENTS_SIGNIN_CORE_BROWSER_ACCOUNT_TRACKER_SERVICE_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/memory/ref_counted.h"
-#include "components/keyed_service/core/keyed_service.h"
-#include "google_apis/gaia/oauth2_token_service.h"
-
-class AccountInfoFetcher;
-class OAuth2TokenService;
-class PrefService;
-
-namespace base {
-class DictionaryValue;
-}
-
-// AccountTrackerService is a KeyedService that retrieves and caches GAIA
-// information about Google Accounts.
-class AccountTrackerService : public KeyedService,
-                              public OAuth2TokenService::Observer {
- public:
-  // Name of the preference property that persists the account information
-  // tracked by this service.
-  static const char kAccountInfoPref[];
-
-  // Information about a specific account.
-  struct AccountInfo {
-    std::string account_id;  // The account ID used by OAuth2TokenService.
-    std::string gaia;
-    std::string email;
-    // TODO(rogerta): eventually this structure will include other information
-    // about the account, like full name, profile picture URL, etc.
-  };
-
-  // Clients of AccountTrackerService can implement this interface and register
-  // with AddObserver() to learn about account information changes.
-  class Observer {
-   public:
-    virtual ~Observer() {}
-    virtual void OnAccountUpdated(const AccountInfo& info) = 0;
-    virtual void OnAccountRemoved(const AccountInfo& info) = 0;
-  };
-
-  AccountTrackerService();
-  virtual ~AccountTrackerService();
-
-  // KeyedService implementation.
-  virtual void Shutdown() OVERRIDE;
-
-  void AddObserver(Observer* observer);
-  void RemoveObserver(Observer* observer);
-
-  void Initialize(OAuth2TokenService* token_service,
-                  PrefService* pref_service,
-                  net::URLRequestContextGetter* request_context_getter);
-
-  // Returns the list of known accounts and for which gaia IDs
-  // have been fetched.
-  std::vector<AccountInfo> GetAccounts() const;
-  AccountInfo GetAccountInfo(const std::string& account_id);
-  AccountInfo FindAccountInfoByGaiaId(const std::string& gaia_id);
-  AccountInfo FindAccountInfoByEmail(const std::string& email);
-
-  // Indicates if all user information has been fetched. If the result is false,
-  // there are still unfininshed fetchers.
-  virtual bool IsAllUserInfoFetched() const;
-
- private:
-  friend class AccountInfoFetcher;
-
-  // These methods are called by fetchers.
-  void OnUserInfoFetchSuccess(AccountInfoFetcher* fetcher,
-                              const base::DictionaryValue* user_info);
-  void OnUserInfoFetchFailure(AccountInfoFetcher* fetcher);
-
-  // OAuth2TokenService::Observer implementation.
-  virtual void OnRefreshTokenAvailable(const std::string& account_id) OVERRIDE;
-  virtual void OnRefreshTokenRevoked(const std::string& account_id) OVERRIDE;
-
-  struct AccountState {
-    AccountInfo info;
-  };
-
-  void NotifyAccountUpdated(const AccountState& state);
-  void NotifyAccountRemoved(const AccountState& state);
-
-  void StartTrackingAccount(const std::string& account_id);
-  void StopTrackingAccount(const std::string& account_id);
-  void StartFetchingUserInfo(const std::string& account_id);
-  void DeleteFetcher(AccountInfoFetcher* fetcher);
-
-  // Load the current state of the account info from the preferences file.
-  void LoadFromPrefs();
-  void SaveToPrefs(const AccountState& account);
-  void RemoveFromPrefs(const AccountState& account);
-
-  void LoadFromTokenService();
-
-  OAuth2TokenService* token_service_;  // Not owned.
-  PrefService* pref_service_;  // Not owned.
-  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
-  std::map<std::string, AccountInfoFetcher*> user_info_requests_;
-  std::map<std::string, AccountState> accounts_;
-  ObserverList<Observer> observer_list_;
-  bool shutdown_called_;
-
-  DISALLOW_COPY_AND_ASSIGN(AccountTrackerService);
-};
-
-#endif  // COMPONENTS_SIGNIN_CORE_BROWSER_ACCOUNT_TRACKER_SERVICE_H_