Convert things from AOS logging to glog

This is necessary so ceres (which includes glog) can be included in more
places.

Change-Id: Ie0a54dc6a9e21e0c2f11899d08c87d08c5c0e028
diff --git a/aos/vision/events/gtk_event.cc b/aos/vision/events/gtk_event.cc
index 0c518e0..4ff9fde 100644
--- a/aos/vision/events/gtk_event.cc
+++ b/aos/vision/events/gtk_event.cc
@@ -6,6 +6,7 @@
 #include <thread>
 
 #include "aos/vision/events/epoll_events.h"
+#include "aos/logging/logging.h"
 
 namespace aos {
 namespace events {