Merge "Fix ATMS#focusTopTask set to PiP task even the activity is not...

Merge "Fix ATMS#focusTopTask set to PiP task even the activity is not focusable" into udc-dev am: e10f63b4 am: 145cb10c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23493105



Change-Id: I04bea5f4c2aa1f8d015ffe796d23efdb8566cd23
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>