[automerger skipped] DO NOT MERGE: ActivityManager#killBackgroundProcesses can kill caller's own app only am: 818b76359f -s ours

am skip reason: skipped by user jji

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/20306378

Change-Id: Iba9168d5bfb5d25bf04a15426f515e49058df7ae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>