Use Firefox to open mail.google.com every time you click a link that opens your email?
For a while, every time I open Gmail I am told "Use Firefox to open mail.google.com every time you click a link that opens your email?" with the only options being "Set as default", "Not now" and closing it. The latter two only makes it pop up the next time; how do I get rid of this? I would like to say "No" and not being asked again. It is getting annoying.