[Sync] Rename csync namespace to syncer

sync/sessions/session_state.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/session_state.h"
 
 #include <set>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 
 using std::set;
 using std::vector;
 
-namespace csync {
+namespace syncer {
 namespace sessions {
 
 ConflictProgress::ConflictProgress()
   : num_server_conflicting_items(0), num_hierarchy_conflicting_items(0),
     num_encryption_conflicting_items(0) {
 }
 
 ConflictProgress::~ConflictProgress() {
 }
 
@@ skipping 105 matching lines @@
   return false;
 }
 
 PerModelSafeGroupState::PerModelSafeGroupState() {
 }
 
 PerModelSafeGroupState::~PerModelSafeGroupState() {
 }
 
 }  // namespace sessions
-}  // namespace csync
+}  // namespace syncer