Exposing chrome JS objects to content without __exposedProps__ is insecure and deprecated. See https://developer.mozilla.org/en/XPConnect_wrappers for more information.
L'espoçion de ogetti chrome JS into contegnuo sensa __exposedProps__ o no l'é seguo e-o l'é deprecou. Pe avei atre informaçioin amia https://developer.mozilla.org/en/XPConnect_wrappers