Bug 1683753 - Don't use the bucketed shelf allocator for glyphs. r=jrmuizel
Bug 1683753 - Don't use the bucketed shelf allocator for glyphs. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D100690

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/0ebc6a1d8e51381dc4831027dcd974b3abc61de8

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