Address API review feedback

"Can you use a Service instead of having a non-service Base class?".

Bug: 218682005
Test: existing CTS/UNIT test
Ignore-AOSP-First: nearby_not_in_aosp_yet
CTS-Coverage-Bug: 205591293
Change-Id: I6e743f89f09e3cf27a96e60ad52bd0d2d9074a1a
1 file changed