[Sync] Rename csync namespace to syncer

sync/engine/apply_updates_command.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/engine/apply_updates_command.h"
 
 #include "base/location.h"
 #include "sync/engine/update_applicator.h"
 #include "sync/sessions/sync_session.h"
 #include "sync/syncable/directory.h"
 #include "sync/syncable/read_transaction.h"
 #include "sync/syncable/write_transaction.h"
 
-namespace csync {
+namespace syncer {
 
 using sessions::SyncSession;
 
 ApplyUpdatesCommand::ApplyUpdatesCommand() {}
 ApplyUpdatesCommand::~ApplyUpdatesCommand() {}
 
 std::set<ModelSafeGroup> ApplyUpdatesCommand::GetGroupsToChange(
     const sessions::SyncSession& session) const {
   std::set<ModelSafeGroup> groups_with_unapplied_updates;
 
@@ skipping 53 matching lines @@
     for (syncable::ModelTypeSet::Iterator it =
              status.updates_request_types().First(); it.Good(); it.Inc()) {
       // This gets persisted to the directory's backing store.
       dir->set_initial_sync_ended_for_type(it.Get(), true);
     }
   }
 
   return SYNCER_OK;
 }
 
-}  // namespace csync
+}  // namespace syncer