Just installed Chromium and unity-chromium-extension. Now after a reboot, I get the option from GMail to install the WebApp. I accept, however from then on nothing happens - a search for GMail in the dash gives nothing and there is nothing new in the messaging indicator.
Perhaps I am experiencing a bug, but I'd like to be sure that I am not overlooking anything before I come to that. So please give me a hand with this, it's my first time actually looking into this feature.