Revert "Revert "Add timestamp in scan results""

With b/6979211 fixed, we can reinstate timestamps.

This reverts commit 578531082b8e8c8aa03868e69591b7613b0e8b8e

Change-Id: I5dffc8d9701004f7c6325f21e1e33d1cdd2d05c0
4 files changed