[Sync] Rename csync namespace to syncer

sync/util/logging.h

Index: sync/util/logging.h
diff --git a/sync/util/logging.h b/sync/util/logging.h
index 97d215b02e4689a01e32d237355d1b79f17b93e0..900c08fa91e4e028f647523ad6942f2dee401ebb 100644
--- a/sync/util/logging.h
+++ b/sync/util/logging.h
@@ -14,12 +14,12 @@ namespace tracked_objects {
 class Location;
 }  // namespace tracked_objects
 
-namespace csync {
+namespace syncer {
 
 bool VlogIsOnForLocation(const tracked_objects::Location& from_here,
                          int verbose_level);
 
-}  // namespace csync
+}  // namespace syncer
 
 #define VLOG_LOC_STREAM(from_here, verbose_level)                       \
   logging::LogMessage(from_here.file_name(), from_here.line_number(),   \
@@ -30,6 +30,6 @@ bool VlogIsOnForLocation(const tracked_objects::Location& from_here,
       VLOG_LOC_STREAM(from_here, verbose_level),                        \
       ::logging::DEBUG_MODE &&                                          \
       (VLOG_IS_ON(verbose_level) ||                                     \
-       ::csync::VlogIsOnForLocation(from_here, verbose_level)))  \
+       ::syncer::VlogIsOnForLocation(from_here, verbose_level)))  \
 
 #endif  // SYNC_UTIL_LOGGING_H_