Merge "Exact widget sizes functionalities into an utility class" into sc-dev am: 84fe7e3a1e am: 1256ae4746 am: 3c8524e64d

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

Change-Id: Ib2198797c813a4696578dbdb3bfb0693b256722c