Bug 133467 - Adjust reftest fuzziness. r=jrmuizel
Bug 133467 - Adjust reftest fuzziness. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D100695

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/932397657d79c5a8ec90fbbd6e0a35493b549cb5

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