Merge "DO NOT MERGE: Fix ActivityManager#killBackgroundProcesses permissions" into sc-dev am: 7ca03665

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/25119905



Change-Id: Ibe2c9477adfdadab90ce3e41c8a3a80b67effd28
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>