sync: Consistently refcount ModelSafeWorkers

sync/internal_api/sync_manager_impl.h

 // Copyright 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 SYNC_INTERNAL_API_SYNC_MANAGER_H_
 #define SYNC_INTERNAL_API_SYNC_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 51 matching lines @@
   virtual ~SyncManagerImpl();
 
   // SyncManager implementation.
   virtual void Init(
       const base::FilePath& database_location,
       const WeakHandle<JsEventHandler>& event_handler,
       const std::string& sync_server_and_path,
       int sync_server_port,
       bool use_ssl,
       scoped_ptr<HttpPostProviderFactory> post_factory,
-      const std::vector<ModelSafeWorker*>& workers,
+      const std::vector<scoped_refptr<ModelSafeWorker> >& workers,
       ExtensionsActivity* extensions_activity,
       SyncManager::ChangeDelegate* change_delegate,
       const SyncCredentials& credentials,
       const std::string& invalidator_client_id,
       const std::string& restored_key_for_bootstrapping,
       const std::string& restored_keystore_key_for_bootstrapping,
       InternalComponentsFactory* internal_components_factory,
       Encryptor* encryptor,
       scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler,
       ReportUnrecoverableErrorFunction
@@ skipping 287 matching lines @@
   scoped_ptr<SyncEncryptionHandlerImpl> sync_encryption_handler_;
 
   base::WeakPtrFactory<SyncManagerImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncManagerImpl);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_SYNC_MANAGER_H_