Bubbling up setNightMode and setLocationMode.

"LocationMode" is a better name for the setting than gpsMode and it's
been renamed internally in a separate CL.

NightMode has been transferred over to a BatterySaver flag in another
CL, so this adds the setting here.

Bug: 119261320
Test: Android builds
Change-Id: I9fe157c9bb8d032f8ae60391c1f09ff6886c8e41