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

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

Change-Id: I1ac07b7c6c79d32cb37c0cfc178365ed5c08d40b