Backed out changeset 042a934005b6 (bug 1696842) for causing bug 1738241. CLOSED TREE
Backed out changeset 042a934005b6 (bug 1696842) for causing bug 1738241. CLOSED TREE

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/573c31f23a806b63ad47bd12bfc265401e48e813

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