In this case I was referring to a game running in browser, displaying via WebGL, playable via Gamepad.
Fair enough.
I have to admit though that I personally am not very fond of WebGL. Microsofts original stance to it was very good, because quite frankly, allowing any website to run code on the GPU sounds like a perfect way to compromise security.
I know that Chrome's ANGLE tries to mitigate these kinds of issues (among other things), but it just seems like a lot of hassle for not much gain. Alas though, this is really getting far away from the topic.