Fix regression from location changes: GPS battery tracking.

The client UID list wasn't being saved, so we never removed
client UID's. As a result apps get blamed for GPS even when
they are no longer using it.

Bug: 7007314
Change-Id: Idff3b7c8c0ee87b99c9bdd7bd20d8391d0b1ac0f

services/java/com/android/server/location/GpsLocationProvider.java

@@ -845,6 +845,9 @@ public class GpsLocationProvider implements LocationProviderInterface {
                 }
             }
         }
+
+        // save current uids
+        mClientUids = uids;
     }
 
     @Override