[webvtt] Pull Request: Fix #260: Add a non-CSS UA conformance class

zcorpan has just submitted a new pull request for 
https://github.com/w3c/webvtt:

== Fix #260: Add a non-CSS UA conformance class ==
#260

See https://github.com/w3c/webvtt/pull/261

Received on Friday, 13 November 2015 20:30:30 UTC