Merge "[MultiUser] fix async bouncer user" into tm-dev am: ab9ea4a88e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17870576

Change-Id: Id6286993f6a6e3bc3861517eab728535387a04a2
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>