[Sync] Rename csync namespace to syncer

sync/js/js_event_details.h

Index: sync/js/js_event_details.h
diff --git a/sync/js/js_event_details.h b/sync/js/js_event_details.h
index ad93b67602bec917c946912e03016764cf999993..fb3bf39344f3017ac42fc401292de112f3fb285d 100644
--- a/sync/js/js_event_details.h
+++ b/sync/js/js_event_details.h
@@ -13,7 +13,7 @@
 #include "base/values.h"
 #include "sync/internal_api/public/util/immutable.h"
 
-namespace csync {
+namespace syncer {
 
 // A thin wrapper around Immutable<DictionaryValue>.  Used for passing
 // around event details to different threads.
@@ -40,6 +40,6 @@ class JsEventDetails {
   ImmutableDictionaryValue details_;
 };
 
-}  // namespace csync
+}  // namespace syncer
 
 #endif  // SYNC_JS_JS_EVENT_DETAILS_H_