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: 69885a2f

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



Change-Id: I2dbac9bcb07bc1f341718946242756f2f06cda28
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>