Convert VisionStatus to event loops.

Change-Id: I8b34af5c98a876751651c78ccfad6c456c788274
diff --git a/y2016/actors/autonomous_actor.h b/y2016/actors/autonomous_actor.h
index a2dda27..d905a27 100644
--- a/y2016/actors/autonomous_actor.h
+++ b/y2016/actors/autonomous_actor.h
@@ -86,6 +86,8 @@
 
   actors::VisionAlignActor::Factory vision_align_actor_factory_;
   ::std::unique_ptr<::aos::common::actions::Action> vision_action_;
+
+  ::aos::Fetcher<::y2016::vision::VisionStatus> vision_status_fetcher_;
 };
 
 }  // namespace actors