Upgraded the rest of Time.

Change-Id: I0ee083837e51d8f74a798b7ba14a3b6bb3859f35
diff --git a/y2015/BUILD b/y2015/BUILD
index 84d9e14..748fde6 100644
--- a/y2015/BUILD
+++ b/y2015/BUILD
@@ -12,6 +12,7 @@
   deps = [
     '//aos/common/logging',
     '//aos/common:once',
+    '//aos/common:time',
     '//aos/common/network:team_number',
     '//frc971/control_loops:state_feedback_loop',
     '//frc971:shifter_hall_effect',