You're replying to someone who is talking about a native app, but the overall issue here is about web apps. Chrome and Firefox don't request the appropriate permission (which, as things stand right now, is probably the safer choice), and there's no way for a website to signal to the browser that it wants that permission, so that the browser could prompt the user only for websites that ask for it, and persist the allow/deny response, similarly to how general location permission works via the JS location APIs.
You're replying to someone who is talking about a native app, but the overall issue here is about web apps. Chrome and Firefox don't request the appropriate permission (which, as things stand right now, is probably the safer choice), and there's no way for a website to signal to the browser that it wants that permission, so that the browser could prompt the user only for websites that ask for it, and persist the allow/deny response, similarly to how general location permission works via the JS location APIs.