Bug 1640617 - Disable partial present when debug overlays are enabled. r=nical
Bug 1640617 - Disable partial present when debug overlays are enabled. r=nical

Differential Revision: https://phabricator.services.mozilla.com/D88087

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/819dfdc2c954eb4e62bcdfd6f1a69e1d00e79750

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