Related document at Google: Installable Web Apps. "Normal web pages must ask for permission from the user before they can do relatively innocuous things like show notifications, use the clipboard, or access permanent storage. This makes sense; it would be annoying for random web pages you stumble across to show desktop notifications. On the other hand, if a web app repeatedly asks for permission, that's a terrible user experience."
Copyright © 2017, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds