Merge "Make BaseIcon.Workspace so that it can be overriden." into sc-dev am: 8a51f11b63 am: 8fb35f18f7 am: bc458ba142

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14754618

Change-Id: I9c56feb3ef17718ff8497b01388a4967a7894565