Passing ServiceState as byte array into ServiceStateProvider

This allows the provider to reconstruct the service state
object correctly. Also we can get rid of all the 'set'
methods in ServiceState, which we'd like to remove in the future.

Test: Manual
Bug: 129768354
Merged-In: I835d30e544b3ed49d5d0b6b1ca981a81e3ee2039
Change-Id: I835d30e544b3ed49d5d0b6b1ca981a81e3ee2039
(cherry picked from commit 2e273b2f)