Merge "Make sure move task to back is handled by shell" into udc-dev am:...

Merge "Make sure move task to back is handled by shell" into udc-dev am: c2970d74 am: da67a78c am: 4005e2c2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23269965



Change-Id: Ieff67c5c21d5ddda8a9dd19d22569158e5327e1d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>