Merge "Return right activities in getTopVisibleActivities method" into udc-dev am: d401d88f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22954347



Change-Id: Ie5805406cf71f6c4f0e26432016361573dc2a270
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>