<snip>
The best example I could find is in the Web Notifications PR published
>>
> > earlier this month:
> http://www.w3.org/TR/2015/PR-notifications-20150910/#displaying-notifications
>
> I don't understand much of this spec :-( But I doubt it has any bearings
> on invocation of wallets and such.
>
>
</snip>
To be clear, I am not suggesting that the Web payments API in the browser
would invoke the notifications API on the host platform.
I am drawing attention to a precedent for invocation of a platform API as a
result of a browser API being invoked.
What is not clear to me is how this would work for cloud-based wallets.
Perhaps the recommendation would be that the browser allows the user to
provide a wallet API endpoint (URL) that conforms to our recommendations or
it will invoke the platform's payment API?