[sync] Isolate FOREIGN_SESSION_UPDATED notification in ProfileSyncService

chrome/browser/sync/profile_sync_service.h

 // Copyright (c) 2012 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_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 21 matching lines @@
 #include "components/sync_driver/data_type_manager_observer.h"
 #include "components/sync_driver/data_type_status_table.h"
 #include "components/sync_driver/device_info_sync_service.h"
 #include "components/sync_driver/local_device_info_provider.h"
 #include "components/sync_driver/protocol_event_observer.h"
 #include "components/sync_driver/startup_controller.h"
 #include "components/sync_driver/sync_frontend.h"
 #include "components/sync_driver/sync_prefs.h"
 #include "components/sync_driver/sync_service.h"
 #include "components/sync_driver/sync_stopped_reporter.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 #include "net/base/backoff_entry.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 #include "sync/internal_api/public/network_time_update_callback.h"
 #include "sync/internal_api/public/shutdown_reason.h"
 #include "sync/internal_api/public/sync_manager_factory.h"
 #include "sync/internal_api/public/user_share.h"
 #include "sync/internal_api/public/util/experiments.h"
@@ skipping 119 matching lines @@
 //   SetSyncSetupCompleted() followed by SetSetupInProgress(false) - this will
 //   tell the sync engine that setup is completed and it can begin downloading
 //   data from the sync server.
 //
 class ProfileSyncService : public sync_driver::SyncService,
                            public sync_driver::SyncFrontend,
                            public sync_driver::SyncPrefObserver,
                            public sync_driver::DataTypeManagerObserver,
                            public syncer::UnrecoverableErrorHandler,
                            public KeyedService,
+                           public content::NotificationObserver,
                            public OAuth2TokenService::Consumer,
                            public OAuth2TokenService::Observer,
                            public SigninManagerBase::Observer {
  public:
   typedef browser_sync::SyncBackendHost::Status Status;
 
   enum SyncEventCodes  {
     MIN_SYNC_EVENT_CODE = 0,
 
     // Events starting the sync service.
@@ skipping 443 matching lines @@
     AUTH_ERROR_ENCOUNTERED,
     AUTH_ERROR_FIXED,
     AUTH_ERROR_LIMIT
   };
 
   friend class ProfileSyncServicePasswordTest;
   friend class SyncTest;
   friend class TestProfileSyncService;
   FRIEND_TEST_ALL_PREFIXES(ProfileSyncServiceTest, InitialState);
 
+  // Observe notifications.
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
+
   // Stops the sync engine. Does NOT set IsSyncRequested to false. Use
   // RequestStop for that. |data_fate| controls whether the local sync data is
   // deleted or kept when the engine shuts down.
   void StopImpl(SyncStopDataFate data_fate);
 
   // Update the last auth error and notify observers of error state.
   void UpdateAuthErrorState(const GoogleServiceAuthError& error);
 
   // Detects and attempts to recover from a previous improper datatype
   // configuration where Keep Everything Synced and the preferred types were
@@ skipping 320 matching lines @@
   // to OnConfigureDone originated from BeginConfigureCatchUpBeforeClear and
   // needs to be followed by ClearAndRestartSyncForPassphraseEncryption().
   bool catch_up_configure_in_progress_;
 
   // Whether the major version has changed since the last time Chrome ran,
   // and therefore a passphrase required state should result in prompting
   // the user. This logic is only enabled on platforms that consume the
   // IsPassphrasePrompted sync preference.
   bool passphrase_prompt_triggered_by_version_;
 
+  content::NotificationRegistrar registrar_;
+
   base::WeakPtrFactory<ProfileSyncService> weak_factory_;
 
   // We don't use |weak_factory_| for the StartupController because the weak
   // ptrs should be bound to the lifetime of ProfileSyncService and not to the
   // [Initialize -> sync disabled/shutdown] lifetime.  We don't pass
   // StartupController an Unretained reference to future-proof against
   // the controller impl changing to post tasks. Therefore, we have a separate
   // factory.
   base::WeakPtrFactory<ProfileSyncService> startup_controller_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(
     const syncer::SyncProtocolError& error);
 
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_