Merge "Refactor arrow popups to allow easier code overriding and sharing." into sc-v2-dev am: 03be53443d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15897839

Change-Id: I21635764787023c6fc7340c7e12f60a939b1dc5d