[Sync] Enable adding notifier observers from 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 <list>
 #include <string>
 
@@ skipping 20 matching lines @@
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_types.h"
 #include "googleurl/src/gurl.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/sync_manager_factory.h"
 #include "sync/internal_api/public/util/experiments.h"
 #include "sync/internal_api/public/util/unrecoverable_error_handler.h"
 #include "sync/js/sync_js_controller.h"
+#include "sync/notifier/sync_notifier_helper.h"
 
 class Profile;
 class ProfileSyncComponentsFactory;
 class SigninManager;
 class SyncGlobalError;
 
 namespace browser_sync {
 class BackendMigrator;
 class ChangeProcessor;
 class DataTypeManager;
@@ skipping 195 matching lines @@
   void GetDataTypeControllerStates(
     browser_sync::DataTypeController::StateMap* state_map) const;
 
   // Disables sync for user. Use ShowLoginDialog to enable.
   virtual void DisableForUser();
 
   // Whether sync is enabled by user or not.
   virtual bool HasSyncSetupCompleted() const;
   virtual void SetSyncSetupCompleted();
 
+  // syncer::SyncNotifier implementation (via SyncFrontend).
+  virtual void OnNotificationsEnabled() OVERRIDE;
+  virtual void OnNotificationsDisabled(
+      syncer::NotificationsDisabledReason reason) OVERRIDE;
+  virtual void OnIncomingNotification(
+      const syncer::ObjectIdPayloadMap& id_payloads,
+      syncer::IncomingNotificationSource source) OVERRIDE;
+
   // SyncFrontend implementation.
   virtual void OnBackendInitialized(
       const syncer::WeakHandle<syncer::JsBackend>& js_backend,
       bool success) OVERRIDE;
   virtual void OnSyncCycleCompleted() OVERRIDE;
   virtual void OnSyncConfigureRetry() OVERRIDE;
   virtual void OnConnectionStatusChange(
       syncer::ConnectionStatus status) OVERRIDE;
   virtual void OnStopSyncingPermanently() OVERRIDE;
   virtual void OnPassphraseRequired(
@@ skipping 269 matching lines @@
     return configure_status_;
   }
 
   // If true, the ProfileSyncService has detected that a new GAIA signin has
   // succeeded, and is waiting for initialization to complete. This is used by
   // the UI to differentiate between a new auth error (encountered as part of
   // the initialization process) and a pre-existing auth error that just hasn't
   // been cleared yet. Virtual for testing purposes.
   virtual bool waiting_for_auth() const;
 
+  // Updates the set of ObjectIds associated with a given
+  // |handler|. Passing an empty ObjectIdSet will unregister
+  // |handler|. There should be at most one handler registered per
+  // object id.
+  //
+  // The handler -> registered ids map is persisted across restarts of
+  // sync.
+  void UpdateRegisteredIds(syncer::SyncNotifierObserver* handler,
+                           const syncer::ObjectIdSet& ids);
+
   // ProfileKeyedService implementation.
   virtual void Shutdown() OVERRIDE;
 
  protected:
   // Used by test classes that derive from ProfileSyncService.
   virtual browser_sync::SyncBackendHost* GetBackendForTest();
 
   // Helper to install and configure a data type manager.
   void ConfigureDataTypeManager();
 
@@ skipping 254 matching lines @@
   // If |true|, there is setup UI visible so we should not start downloading
   // data types.
   bool setup_in_progress_;
 
   // The set of currently enabled sync experiments.
   syncer::Experiments current_experiments;
 
   // Factory the backend will use to build the SyncManager.
   syncer::SyncManagerFactory sync_manager_factory_;
 
+  // The set of all registered IDs.
+  syncer::ObjectIdSet all_registered_ids_;
+
+  // Dispatches invalidations to handlers.
+  syncer::SyncNotifierHelper notifier_helper_;
+
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(
     const syncer::SyncProtocolError& error);
 
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_