Ensure X-DNS-Prefetch-Control is defined (or removed everywhere)

[annevk]

See findings by @samuelhorwitz at whatwg/fetch#658 (comment).

It seems this would require integration with HTML's navigate algorithm (assuming it only applies for such document resources).

It would also be good to figure out if that <meta> element is actually supported (and maybe file a bug to get that removed as it's only one browser).

[yoavweiss]

AFAICT, Chromium does support this header, as well as its http-equiv.

Should be defined as part of #86

/cc @noamr

[yoavweiss]

AFAICT, Chromium does support this header, as well as its http-equiv.

Should be defined as part of #86

/cc @noamr

[yoavweiss]

AFAICT, Chromium does support this header, as well as its http-equiv.

Should be defined as part of #86

/cc @noamr

[yoavweiss]

Closing as this is being archived. Moved to whatwg/html#9473