Merge "Exact widget sizes functionalities into an utility class" into sc-dev am: 84fe7e3a1e am: 0ed1b41464

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14881307

Change-Id: Ia0862ffdc3143ba227fb169540eee8be7d73f011