Bug 1687726 - Bool vectors are vectors. r=lsalzman
Bug 1687726 - Bool vectors are vectors. r=lsalzman

Differential Revision: https://phabricator.services.mozilla.com/D102435

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/d60c7fee2923e0d819d305318dd3c28255e41286

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