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: 9ea15e69

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



Change-Id: I25f10b311b5f4ae42c93e66d62db15481aaa0859
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>