• Bug 1612941 - properly detect GL_ARB_texture_swizzle extension in WR.… 

    … r=gw,kvark

Differential Revision: https://phabricator.services.mozilla.com/D65596

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/3cae17a5ec80e4ee12fe173a414fcd5eb46f9a41
    Lee Salzman @moz-gfx
    Lee Salzman authored and moz-gfx committed Mar 11, 2020
    bd9c0cc