Bug 1596086 - Detect hard gardient stops using offsets instead of colors. r=gw
Bug 1596086 - Detect hard gardient stops using offsets instead of colors. r=gw

Differential Revision: https://phabricator.services.mozilla.com/D54537

[wrupdater] From https://hg.mozilla.org/mozilla-central/rev/e4f0b7088d50971a956ec72e4b55c7b92b7b7eae

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