[Sync] Rename csync namespace to syncer

sync/sessions/test_util.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/sessions/test_util.h"
 
-namespace csync {
+namespace syncer {
 namespace sessions {
 namespace test_util {
 
 void SimulateHasMoreToSync(sessions::SyncSession* session,
                            SyncerStep begin, SyncerStep end) {
   session->mutable_status_controller()->update_conflicts_resolved(true);
   ASSERT_TRUE(session->HasMoreToSync());
 }
 
 void SimulateDownloadUpdatesFailed(sessions::SyncSession* session,
@@ skipping 38 matching lines @@
   session->delegate()->OnReceivedLongPollIntervalUpdate(new_poll);
 }
 
 void SimulateSessionsCommitDelayUpdateImpl(sessions::SyncSession* session,
     const base::TimeDelta& new_delay) {
   session->delegate()->OnReceivedSessionsCommitDelay(new_delay);
 }
 
 }  // namespace test_util
 }  // namespace sessions
-}  // namespace csync
+}  // namespace syncer