The notification panel only ever addresses the account on screen, so
arming a browser for five accounts meant switching account five times
and answering the same permission prompt on each pass.
The browser holds a single push subscription: enabling an account
registers it against that one subscription rather than creating another.
A section in the notification settings now lists every connected account
with its current state and turns push on or off for the ones selected,
walking them against the same subscription.
A refusal at the browser level - unsupported, or permission denied -
applies to every account, so it stops the walk instead of failing each
account in turn and prompting repeatedly.
lucamzanon
e468b08fb7