PNaCl seems like a separate project from NaCl to me, and NaCl itself can't run LLVM IL. Also, there's really opposition of having it implemented in other brows

PNaCl seems like a separate project from NaCl to me, and NaCl itself can't run LLVM IL. Also, there's really opposition of having it implemented in other browsers, at least Mozilla vocally opposed it. I think that if they managed to do it via a plugin though, that could work.