Merge "Extract common measurement in widgets pickers to its base class" into sc-dev am: 9f2674b6a9 am: 467603e1f0

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

Change-Id: I8775606a4fe6875726dc32133f46347ef3764d65