Merge "Give fg apps a chance to handle stop before killing its process" into udc-dev am: d2f60406

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22196244



Change-Id: I0c501d6ae2ddab3e13937a3352a1df9f183eb687
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>