[Sync] Add support for enabling session sync remotely.

chrome/browser/sync/profile_sync_service.h

 // Copyright (c) 2011 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_
 #pragma once
 
 #include <string>
 
@@ skipping 146 matching lines @@
   void RegisterAuthNotifications();
 
   // Return whether all sync tokens are loaded and
   // available for the backend to start up.
   bool AreCredentialsAvailable();
 
   // Registers a data type controller with the sync service.  This
   // makes the data type controller available for use, it does not
   // enable or activate the synchronization of the data type (see
   // ActivateDataType).  Takes ownership of the pointer.
-  void RegisterDataTypeController(
-      browser_sync::DataTypeController* data_type_controller);
+  virtual void RegisterDataTypeController(
+      browser_sync::DataTypeController* data_type_controller) OVERRIDE;
 
   // Returns the session model associator associated with this type, but only if
   // the associator is running.  If it is doing anything else, it will return
   // null.
   browser_sync::SessionModelAssociator* GetSessionModelAssociator();
 
   // Maintain state of where we are in a server clear operation.
   void ResetClearServerDataState();
   ClearServerDataState GetClearServerDataState();
 
@@ skipping 227 matching lines @@
   // If it is running, the DataTypeManager will be instructed to reconfigure
   // the sync backend so that exactly these datatypes are actively synced.  See
   // class comment for more on what it means for a datatype to be Preferred.
   virtual void ChangePreferredDataTypes(
       const syncable::ModelTypeSet& preferred_types);
 
   // Get the set of currently enabled data types (as chosen or configured by
   // the user).  See class comment for more on what it means for a datatype
   // to be Preferred.
   virtual void GetPreferredDataTypes(
-      syncable::ModelTypeSet* preferred_types) const;
+      syncable::ModelTypeSet* preferred_types) const OVERRIDE;
 
   // Gets the set of all data types that could be allowed (the set that
   // should be advertised to the user).  These will typically only change
   // via a command-line option.  See class comment for more on what it means
   // for a datatype to be Registered.
   virtual void GetRegisteredDataTypes(
-      syncable::ModelTypeSet* registered_types) const;
+      syncable::ModelTypeSet* registered_types) const OVERRIDE;
 
   // Checks whether the Cryptographer is ready to encrypt and decrypt updates
   // for sensitive data types. Caller must be holding a
   // syncapi::BaseTransaction to ensure thread safety.
   virtual bool IsCryptographerReady(
       const sync_api::BaseTransaction* trans) const;
 
   // Returns true if a secondary passphrase is being used.
   virtual bool IsUsingSecondaryPassphrase() const;
 
@@ skipping 215 matching lines @@
   // and cached until the syncer either finishes encryption
   // (OnEncryptionComplete) or the user cancels.
   syncable::ModelTypeSet pending_types_for_encryption_;
 
   scoped_ptr<browser_sync::BackendMigrator> migrator_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_