Delegating OOB response processing to browser UA for selected resources

[gaperik]

In a browser based OOB solution, the origin can either process the OOB responses in it's on-board device proxy, the origin service worker, or delegate the to the browser to do this.

Resources listed in the OOB reponse payload are processed by the UA, while resources whose mapping are found in the resource map are processed by the service worker.

This need to be made clearer in the text in OOB for one response and RMAP in multiple responses.