Chad Brubaker f113333b98 Add location backed system clock
This provides a permissionless way to use the location (e.g. GNSS)
provided time data for more accurate time keeping.

Test: atest LocationManagerTest#testGnssProvidedClock
Bug: 123530510
Change-Id: Ifbc45997868040abbb3e1399a8649911afb0af05
2019-03-20 16:10:08 -07:00
..
2019-03-20 16:10:08 -07:00
2019-02-22 14:15:30 -08:00
2019-02-22 17:39:23 -08:00
2017-11-17 09:58:12 -08:00