- Effectively throttles case where many reloads are sent in rapid
succession.
- Simplify Handler state machine by making the state explicit instead
of implicit in the sequence of messages.
- To guard against cascading timeouts due to RAM pressure or other
systemic issues, only start additional services if there is at most one
timed out setting at a time.
- Add some log messages
- Fix b/10487253
Change-Id: Ibe21533f7b644bbadf5b56b61ca0e28b49192470
