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

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

Change-Id: I433fb1df8634e89cf2bc155632d7cb1251edf56b