Yes, of course it is. Why would it be a thing in the open source version but not the almost-identical closed source version with extra Google goodies. Unless one of those goodies was "remove one of the key aspects of NaCl", which I can assure you, is not.
It seemed plausible, but I don't know what "NaCl" is, have no familiarity with Chrome internals, and had never heard of this before. Seemed like it was worth checking before making such a decision. I am amazed that Google has repeated Microsoft's mistake with ActiveX - who would think this was a good idea?
