Merge "Revert "Draw rounded corners above the taskbar"" into sc-v2-dev am:...

Merge "Revert "Draw rounded corners above the taskbar"" into sc-v2-dev am: 6e2d149a am: 1815efea

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15614359

Change-Id: I4a33c6c7a97cb58b906b563e5b453d86e4c62933