• Bug 1594593 - Add wrench regression test for picture cache occlusion … 

    …culling. r=kvark

This adds a regression test for bug #1594567.

Differential Revision: https://phabricator.services.mozilla.com/D52619

[wrupdater] From https://hg.mozilla.org/mozilla-central/rev/31cc5ca631c7a7618b7e5027dd56d6906b1bbd1b
    Glenn Watson @moz-gfx
    Glenn Watson authored and moz-gfx committed Nov 13, 2019
    e615783