Doesn't the browser own the click even before the Web page gets it?
If Google's terms of use want to claim that a browser can't record clicks on their web pages, then perhaps browser terms of use will say they can do whatever they want with any data returned to them by the server.
If Google's terms of use want to claim that a browser can't record clicks on their web pages, then perhaps browser terms of use will say they can do whatever they want with any data returned to them by the server.