Bug 1557721 - Simplify boolean expression. r=kvark
Bug 1557721 - Simplify boolean expression. r=kvark

[wrupdater] From https://github.com/servo/webrender/pull/3667

Depends on D34164

Differential Revision: https://phabricator.services.mozilla.com/D34165

[wrupdater] From https://hg.mozilla.org/mozilla-central/rev/64ea2a3f0d4dd88bd83a03b811ecf4197a2723c8

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