Merge "App layer now stays visible with restart dialog" into udc-dev am: 81c0694a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22761824



Change-Id: I925f25498ca44b9cbbbc414a1682cd4a1d5f9922
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>