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

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

Change-Id: Id1cc5f5399981da7f3dec9159d19569a88b76058