Nest some more namespaces

Did someone previously suggest that all namespace had been
nested?  Silly.

Signed-off-by: Stephan Pleines <pleines.stephan@gmail.com>
Change-Id: I22278c1caaeba8b47dc46fb2ed3078c20a11e190
diff --git a/aos/events/logging/log_namer.h b/aos/events/logging/log_namer.h
index 5374acf..e0660eb 100644
--- a/aos/events/logging/log_namer.h
+++ b/aos/events/logging/log_namer.h
@@ -15,8 +15,7 @@
 #include "aos/events/logging/logger_generated.h"
 #include "aos/uuid.h"
 
-namespace aos {
-namespace logger {
+namespace aos::logger {
 
 class LogNamer;
 
@@ -650,7 +649,6 @@
   void OpenNodeWriter(const Node *source_node, NewDataWriter *data_writer);
 };
 
-}  // namespace logger
-}  // namespace aos
+}  // namespace aos::logger
 
 #endif  // AOS_EVENTS_LOGGING_LOG_NAMER_H_