Merge "Extract common measurement in widgets pickers to its base class" into sc-dev am: 9f2674b6a9 am: a34488cf8f am: fb1e8571bb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15114084

Change-Id: I5ae014d3a3e3d246a6941cb722ebd91efdc847b8