@mikokm @moz-gfx
Bug 1558926 - Part 4: Avoid display list updates for removed pipelines
ccefb70 
Differential Revision: https://phabricator.services.mozilla.com/D60760

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/96290c1e1a5fa34484ef328b6f3c12b814efb45c