[Sync] Rename csync namespace to syncer

sync/protocol/proto_enum_conversions.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.
 
 // Keep this file in sync with the .proto files in this directory.
 
 #include "sync/protocol/proto_enum_conversions.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 
-namespace csync {
+namespace syncer {
 
 #define ASSERT_ENUM_BOUNDS(enum_parent, enum_type, enum_min, enum_max)  \
   COMPILE_ASSERT(enum_parent::enum_type##_MIN == enum_parent::enum_min, \
                  enum_type##_MIN_not_##enum_min);                       \
   COMPILE_ASSERT(enum_parent::enum_type##_MAX == enum_parent::enum_max, \
                  enum_type##_MAX_not_##enum_max);
 
 #define ENUM_CASE(enum_parent, enum_value)              \
   case enum_parent::enum_value: return #enum_value
 
@@ skipping 140 matching lines @@
   switch (favicon_type) {
     ENUM_CASE(sync_pb::SessionTab, TYPE_WEB_FAVICON);
   }
   NOTREACHED();
   return "";
 }
 
 #undef ASSERT_ENUM_BOUNDS
 #undef ENUM_CASE
 
-}  // namespace
+}  // namespace syncer