Ideally you’d have support native in the browser. At one point, a friend at Google mentioned they might put Syphon support right in to Chrome. I can ping them and see if its feasible at all, and point them to this thread.
I suspect it would never get to be in an official version, but perhaps an alternative build of Chrome could have Syphon support.
This is *not* an indication that anyone is working, will work, or ever will make such a thing, just that it was mentioned to me as a possibility. In other words, no promises now or ever 🙂