[Sync] Fix namespace for sync_driver component

chrome/browser/sync/glue/sync_backend_host_core.h

 // Copyright 2013 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_GLUE_SYNC_BACKEND_HOST_CORE_H_
 #define CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_CORE_H_
 
 #include "base/memory/ref_counted.h"
 
 #include "base/timer/timer.h"
@@ skipping 272 matching lines @@
   base::MessageLoop* sync_loop_;
 
   // Our parent's registrar (not owned).  Non-NULL only between
   // calls to DoInitialize() and DoShutdown().
   SyncBackendRegistrar* registrar_;
 
   // The timer used to periodically call SaveChanges.
   scoped_ptr<base::RepeatingTimer<SyncBackendHostCore> > save_changes_timer_;
 
   // Our encryptor, which uses Chrome's encryption functions.
-  SystemEncryptor encryptor_;
+  sync_driver::SystemEncryptor encryptor_;
 
   // A special ChangeProcessor that tracks the DEVICE_INFO type for us.
   scoped_ptr<SyncedDeviceTracker> synced_device_tracker_;
 
   // The top-level syncapi entry point.  Lives on the sync thread.
   scoped_ptr<syncer::SyncManager> sync_manager_;
 
   // Temporary holder of sync manager's initialization results. Set by
   // OnInitializeComplete, and consumed when we pass it via OnBackendInitialized
   // in the final state of HandleInitializationSuccessOnFrontendLoop.
@@ skipping 23 matching lines @@
   std::string signin_scoped_device_id_;
 
   base::WeakPtrFactory<SyncBackendHostCore> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncBackendHostCore);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_CORE_H_