Revert "Reland "Remove gBn/sConstructorMap.""

This reverts commit d7687b2a89d374d8403b4c6c7f94a21c747aa66f.

Reason for revert: b/73103210

Change-Id: Ibd956944c49f4b1a2e51992a4d199a60cd64d7b5
4 files changed