• Bug 1621390 - Optimize backdrop primitives by collapsing to clear col… 

    …or. r=lsalzman,Bert

Differential Revision: https://phabricator.services.mozilla.com/D66362

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/6199f7b91e8bde7b7965585842d7a72e2e406e3e
    @gw3583 @moz-gfx
    gw3583 authored and moz-gfx committed Mar 16, 2020
    Loading status checks…
    7482bd3