Re-land #22292 (Remove useMutableSource from open source build)#22664

Merged

acdlite merged 1 commit intofacebook:mainfrom acdlite:remove-ums-from-oss

Nov 1, 2021

+80-2

Commits on Nov 1, 2021

Re-land facebook#22292 (remove uMS from open source build)
acdlite
committed