[Sync] Remove unneeded 'using syncer::' lines and 'syncer::' scopings

sync/internal_api/internal_components_factory_impl.cc

 // 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.
 
 #include "sync/internal_api/public/internal_components_factory_impl.h"
 
 #include "sync/engine/syncer.h"
 #include "sync/engine/sync_scheduler_impl.h"
 #include "sync/sessions/sync_session_context.h"
 #include "sync/syncable/on_disk_directory_backing_store.h"
@@ skipping 12 matching lines @@
 scoped_ptr<sessions::SyncSessionContext>
 InternalComponentsFactoryImpl::BuildContext(
     ServerConnectionManager* connection_manager,
     syncable::Directory* directory,
     const ModelSafeRoutingInfo& routing_info,
     const std::vector<ModelSafeWorker*> workers,
     ExtensionsActivityMonitor* monitor,
     ThrottledDataTypeTracker* throttled_data_type_tracker,
     const std::vector<SyncEngineEventListener*>& listeners,
     sessions::DebugInfoGetter* debug_info_getter,
-    syncer::TrafficRecorder* traffic_recorder) {
+    TrafficRecorder* traffic_recorder) {
   return scoped_ptr<sessions::SyncSessionContext>(
       new sessions::SyncSessionContext(connection_manager, directory,
           routing_info, workers, monitor, throttled_data_type_tracker,
           listeners, debug_info_getter, traffic_recorder));
 }
 
 scoped_ptr<syncable::DirectoryBackingStore>
 InternalComponentsFactoryImpl::BuildDirectoryBackingStore(
       const std::string& dir_name, const FilePath& backing_filepath) {
   return scoped_ptr<syncable::DirectoryBackingStore>(
       new syncable::OnDiskDirectoryBackingStore(dir_name, backing_filepath));
 }
 
 }  // namespace syncer