Merge "Add activitymanager debug option to freeze a process" into udc-dev am: 731a5331

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22162913



Change-Id: Ie36125170c9d3d8f877f41c28556ca89a3e39663
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>