This is primarily a wrapper over ICarrierMessagingService
that to create a stable API to communicate with CarrierMessagingService.
Test: basic messaging sanity
Bug: 143609473
Merged-in: I67fda8bab3902b358c483f992633dbdfe3a8cda2
Change-Id: I67fda8bab3902b358c483f992633dbdfe3a8cda2
(cherry picked from commit 92642659e8)