Merge "IdleMaint: run IdleMaint if battery is charging" am: 8f7a935713 am: 775aeb22d2 am: 7f963de1d7 am: 71981d8468

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1453295

Change-Id: I46c9fe000dfcf46402982e0e09d2f3900ea35a44