[Sync] Add support for enabling session sync remotely.

chrome/browser/sync/profile_sync_factory_impl.cc

 // 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.
 
 #include "base/command_line.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/api/syncable_service.h"
 #include "chrome/browser/sync/glue/app_data_type_controller.h"
 #include "chrome/browser/sync/glue/autofill_change_processor.h"
@@ skipping 140 matching lines @@
   }
 
   if (!command_line_->HasSwitch(switches::kDisableSyncAutofillProfile)) {
     pss->RegisterDataTypeController(
         new AutofillProfileDataTypeController(this, profile_));
   }
 }
 
 DataTypeManager* ProfileSyncFactoryImpl::CreateDataTypeManager(
     SyncBackendHost* backend,
-    const DataTypeController::TypeMap& controllers) {
+    const DataTypeController::TypeMap* controllers) {
   return new DataTypeManagerImpl(backend, controllers);
 }
 
 ProfileSyncFactory::SyncComponents
 ProfileSyncFactoryImpl::CreateAppSyncComponents(
     ProfileSyncService* profile_sync_service,
     UnrecoverableErrorHandler* error_handler) {
   SyncableService* app_sync_service =
       profile_sync_service->profile()->GetExtensionService();
   sync_api::UserShare* user_share = profile_sync_service->GetUserShare();
@@ skipping 138 matching lines @@
 ProfileSyncFactory::SyncComponents
 ProfileSyncFactoryImpl::CreateSessionSyncComponents(
     ProfileSyncService* profile_sync_service,
     UnrecoverableErrorHandler* error_handler) {
   SessionModelAssociator* model_associator =
       new SessionModelAssociator(profile_sync_service);
   SessionChangeProcessor* change_processor =
       new SessionChangeProcessor(error_handler, model_associator);
   return SyncComponents(model_associator, change_processor);
 }