am 6a3f9e24: am 6bfd8d2a: am ba8eb1ef: Use SystemClock.elapsedRealtime() instead of sensor timestamp

Merge commit '6a3f9e24b61e4da16bec7846b504c851ac7ac289'

* commit '6a3f9e24b61e4da16bec7846b504c851ac7ac289':
  Use SystemClock.elapsedRealtime() instead of sensor timestamp