Merge "Handle the case where launch root is not attached" into udc-dev am: a7afe1ab am: c0e11780

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



Change-Id: Ib9a5f285ddd7fd4436bd48b66e5a4fd1d0d9ecfb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>