net/http: use top-level font media type in sniffer

[agnivade]

RFC 8081 declares a top level font media type for all types of fonts.

The same has been incorporated in whatwg/mimesniff#23. Should we move too ?

The changes would require updating the following mime types -

Obsolete	New
application/font-ttf	font/ttf
application/font-cff	font/collection
application/font-off	font/otf
application/font-sfnt	font/sfnt
application/font-woff	font/woff
application/font-woff2	font/woff2

/cc @bradfitz

[bradfitz]

Sure. If it doesn't break any browser's font parsing, but from that other bug it sounds like it doesn't.

[gopherbot]

Change https://golang.org/cl/102458 mentions this issue: net/http: use top-level font media type