Merge "Convert PowerOptions menu into a dialog and update styling." into rvc-dev am: ee441db39f am: 9e9c927a4f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11886960

Change-Id: I52f560d7d3d7544b51ebdd64ef938c3985e36fdb