Some people want to delete browsing data when switching proxy servers. Right now there is a button in FoxyProxy to delete browsing data manually, but we also want to add the option to delete it automatically when proxies are switched. Why are you so upset about it? Do you think FoxyProxy is stealing your browsing data? Because if it wanted to, it could already do that before these new permissions--simply by watching all traffic going through your proxy servers. Of course, it doesn't do that, but you are no less secure with these new permissions than before; that is my point.