Deduplicate code for sending out RobotState messages

Change-Id: Idcf7c9e375f574ec3711ed16a1959925ee3343af
diff --git a/y2015/wpilib/BUILD b/y2015/wpilib/BUILD
index 85f9139..c5c4202 100644
--- a/y2015/wpilib/BUILD
+++ b/y2015/wpilib/BUILD
@@ -32,5 +32,6 @@
     '//frc971/wpilib:encoder_and_potentiometer',
     '//frc971/control_loops:queues',
     '//frc971/wpilib:logging_queue',
+    '//frc971/wpilib:wpilib_interface',
   ],
 )