Introduce a "scope_extensions"
app manifest member that enables web apps to extend their scope to other
This allows sites that control multiple subdomains and top-level domains to behave as a single web app.Blink component
Web app scope (defined by the scope field) can only be defined with a path from a single origin. It is used to determine whether an app window's current document is a part of the app. It also determines what URLs are allowable in other manifest members. With a mechanism like "scope_extensions", developers are able to expand the behaviors of their app to include other origins if there is agreement between the primary origin of a web app and the associated origins.Initial public proposal
Gecko: No signal
WebKit: No signal
Web developers: No signals
No milestones specifiedLink to entry on the Chrome Platform Status