Merge "Add smart idle maintenance service" am: 0134ac7710 am: e8d9b1d709 am: 926fe1c432 am: 466a401850

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1936378

Change-Id: Ifb2928e44e26280b1099693a4c9dc91e78a3d082