UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36

Steps to reproduce the problem:
1. Visit webpage, where it's server is sending Alt-Svc header like
Alt-Svc: quic="[2003:8:0:16::509d:9615]:443"; v="36,35,34,33,32,31"; ma=60
2. Refresh the page
3. Check via chrome://net-internals/#alt-svc that you don't see record for that domain.

What is the expected behavior?
Chrome should parse that IPv6 address and store it in Alt-Svc cache. Then it should be used in subsequent requests to connect to that IP using QUIC.

What went wrong?
From my undestanding host part of Alt-Svc should comply with RFC3986:
https://tools.ietf.org/html/rfc3986#section-3.2.2
host        = IP-literal / IPv4address / reg-name
IP-literal = "[" ( IPv6address / IPvFuture  ) "]"
IPvFuture  = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" )

But in code it stops parsing of host when it sees first ocurence of ":"
https://cs.chromium.org/chromium/src/net/spdy/spdy_alt_svc_wire_format.cc?sq=package:chromium&dr=C&rcl=1478751499&l=306

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 54.0.2840.71  Channel: n/a
OS Version: OS X 10.11.6
Flash Version: Shockwave Flash 23.0 r0