Checking in debug_view, some extra missing utils, and the y2016 target_sender code.

Change-Id: I241947265da8f332c39862f4d0ddcdc2d29c7b68
diff --git a/aos/vision/events/udp_test.cc b/aos/vision/events/udp_test.cc
index 87046ba..7e77b68 100644
--- a/aos/vision/events/udp_test.cc
+++ b/aos/vision/events/udp_test.cc
@@ -3,7 +3,7 @@
 #include "gtest/gtest.h"
 
 namespace aos {
-namespace vision {
+namespace events {
 
 TEST(UDPTest, SendRecv) {
   RXUdpSocket rx(1109);
@@ -19,5 +19,5 @@
   EXPECT_EQ(txdata[3], rxdata[3]);
 }
 
-}  // namespace vision
+}  // namespace events
 }  // namespace aos