Merge "Add multi-users support to app bubbles" into udc-dev am: c7211bdd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22648901



Change-Id: I637a5adadeae19bd3f1f9deac5950d257b94abbb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>