SupervisedUserSyncService cleanup: Implement SigninManagerBase::Observer

chrome/browser/supervised_user/legacy/supervised_user_sync_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 CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_SYNC_SERVICE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
-#include "base/prefs/pref_change_registrar.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_sync_service_observer.h"
 #include "chrome/browser/supervised_user/supervised_users.h"
 #include "components/keyed_service/core/keyed_service.h"
+#include "components/signin/core/browser/signin_manager_base.h"
 #include "sync/api/syncable_service.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 class PrefService;
+class Profile;
 
 class SupervisedUserSyncService : public KeyedService,
+                                  public SigninManagerBase::Observer,
                                   public syncer::SyncableService {
  public:
   // For use with GetSupervisedUsersAsync() below.
   typedef base::Callback<void(const base::DictionaryValue*)>
       SupervisedUsersCallback;
 
   // Dictionary keys for entry values of |prefs::kSupervisedUsers|.
   static const char kAcknowledged[];
   static const char kChromeAvatar[];
   static const char kChromeOsAvatar[];
@@ skipping 78 matching lines @@
   syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const override;
   syncer::SyncError ProcessSyncChanges(
       const tracked_objects::Location& from_here,
       const syncer::SyncChangeList& change_list) override;
 
  private:
   friend class SupervisedUserSyncServiceFactory;
 
   // Use |SupervisedUserSyncServiceFactory::GetForProfile(...)| to get an
   // instance of this service.
-  explicit SupervisedUserSyncService(PrefService* prefs);
+  explicit SupervisedUserSyncService(Profile* profile);
 
-  void OnLastSignedInUsernameChange();
+  // SigninManagerBase::Observer implementation.
+  void GoogleSignedOut(const std::string& account_id,
+                       const std::string& username) override;
 
   scoped_ptr<base::DictionaryValue> CreateDictionary(
       const std::string& name,
       const std::string& master_key,
       const std::string& signature_key,
       const std::string& encryption_key,
       int avatar_index);
 
   void UpdateSupervisedUserImpl(const std::string& id,
                                 const std::string& name,
                                 const std::string& master_key,
                                 const std::string& signature_key,
                                 const std::string& encryption_key,
                                 int avatar_index,
                                 bool add_user);
 
   void NotifySupervisedUserAcknowledged(const std::string& supervised_user_id);
   void NotifySupervisedUsersSyncingStopped();
   void NotifySupervisedUsersChanged();
 
   void DispatchCallbacks();
 
+  Profile* profile_;
   PrefService* prefs_;
-  PrefChangeRegistrar pref_change_registrar_;
 
   scoped_ptr<syncer::SyncChangeProcessor> sync_processor_;
   scoped_ptr<syncer::SyncErrorFactory> error_handler_;
 
   ObserverList<SupervisedUserSyncServiceObserver> observers_;
 
   std::vector<SupervisedUsersCallback> callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserSyncService);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_SYNC_SERVICE_H_