tree df0e14de6357c73ee09139e39406180c132174f3
parent 76e49c8b3e7f023a0a673aa59c8d2c4fd9359632
author Garfield Tan <xutan@google.com> 1551988021 -0800
committer Garfield Tan <xutan@google.com> 1551995668 -0800

Don't touch system_ce until the first user unlock.

This CL does the following things:
1) Only start PersistQueue when the first user unlocked.
2) Only create recent task folder when we need to write the first file
to it.

Bug: 124697664
Test: Manual test -- checked recent_tasks, recent_images and
launch_params folders are still created correctly. No encryption policy
log seen.
Change-Id: I5b8bf712a3c45092b463622731d58f90d76fec58