commit c39b0b23eb2003cc2eccbeaa166e21a88b198a13
author Tony Huang <tonyychuang@google.com> Mon Jun 10 16:55:20 2019 +0800
committer Tony Huang <tonyychuang@google.com> Thu Jun 13 18:29:00 2019 +0800
tree af14bf965a296b523eb795009b9b707ebe65c31b
parent 28d5f8ee15082927a9ff60c66bda831a7139f6e3

Overlay manifest setting by package manager

Using overlay manager to get package name of overlay apk.
And parse it's resources to get config value directly.

Register PRE_BOOT_COMPLETED to set up the value.

Bug: 134558563
Test: Preload RRO with "is_launcher_enabled:false", flash all device,
      boot to verify if DocumentsUI launcher icon hidden.
Test: Preload RRO with "is_launcher_enabled:false", factory reset,
      and verify if DocumentsUI launcher icon hidden.
Change-Id: Ifc5f90c853a9a2b8b367fa53a678a9ea959e441a