[automerge] DO NOT MERGE: ActivityManager#killBackgroundProcesses can kill caller's own app only 2p: d1c95670b2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20312179

Bug: 239423414
Bug: 223376078
Change-Id: I37419bc54c884138615a7d11fe7b0952b27d87ca
Merged-In: I35d20539ffac055a6d61260445620f45584bd9c5
Merged-In: Ieed6af77da1bc31cfecc5272b9f97971db7ae7b2
Merged-In: I8b8a427ee87339cc038e53adc0912283b05d2cfc