Unfortunately, Chrome doesn’t support WSR. According to Rob Chambers this would be easy for Google to do, and I suspect it is just an oversight on their part (both in terms of making their software more accessible as well as following Windows best practices).
Google: when are you going to put the effort into this? The Chrome 2.0 Beta doesn’t do it either.
Rob Chambers: how easy is this really? You also said that Firefox does support WSR – maybe it does, but not in Google Docs.
So now, I’m using IE8. Google Docs with WSR works great there.