Bug 1612941 - make WR report shader name and features in output for interop with SWGL. r=jrmuizel
Bug 1612941 - make WR report shader name and features in output for interop with SWGL. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D65595

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/558806ca76911093f504fb80232840f395f39d06

servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender