Currently on the web we have to individually ask for permissions. Such as geo-location, push notification, RequestFileSystem (seriously?), Camera, Microphone, Ambient Light. As a user and a developer it becomes increasingly annoying that I have to accept every permission request manually on web apps that I use.
Web applications should have the ability to request multiple permissions at once and that user can accept all at once or deny individually. This is a nice thing to have, and can improve the UX on the web. No privacy is leaked, but instead UX get better.