Merge "Make BaseIcon.Workspace so that it can be overriden." into sc-dev am: 8a51f11b63 am: bd5a18f298

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

Change-Id: Ice558f6aa21fe8d8e819484d3dffc666f5f1ec0c