Combine communication between manager-app and manager-code

Refactor of code to bring together communication logic in one
place.

Bug: 204991850
Test: atest SupplementalProcessManagerServiceUnitTest
Change-Id: I1d93ace7825d5ca4496f1b0e5f5bd957e2a9127e
1 file changed
tree: f25b10a7e24ffa80ef25ae9f0591543ed64fe755
  1. sdksandbox/