Merge "Handle the case where launch root is not attached" into udc-dev am:...

Merge "Handle the case where launch root is not attached" into udc-dev am: a7afe1ab am: 112457fc am: 3cdab6e8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23317855



Change-Id: Ic697b18cc195f217d7cd6f68a8811ab4124c9ee2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>