Move `referrer` from CSP to some other header.

So, while rewriting most of CSP, I think I've decided that Brian was
right, way back in
https://lists.w3.org/Archives/Public/public-webappsec/2014Jun/0162.html.
CSP is simpler to conceptualize as a purely restrictive mechanism, and
I'm on board with the idea that we should keep it that way.

To that end, I would suggest that we drop the `referrer` directive
from the referrer policy spec, and turn it into a distinct header (how
about `referrer: [type]` (or, `referer: origin` in the interests of
historical amusement, and potentially turning on that exciting header
compression that HTTP/2 folks go on about)).

CCing Brian, Brad, and Dan, who seemed most active in the conversation
a year ago.

WDYT?

--
Mike West <mkwst@google.com>, @mikewest

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Received on Friday, 9 October 2015 13:46:09 UTC