Merge "Extract common measurement in widgets pickers to its base class" into sc-dev am: 9f2674b6a9 am: b14a7a2d16 am: b0612d1569

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

Change-Id: If7668dd4b30427c672ce13cda9f93a2ae3e8d504