`nsWindow::Create` will do the right thing (including keeping this behaviour off by default for now) as long as `private` is set appropriately. Differential Revision: https://phabricator.services.mozilla.com/D152460
`nsWindow::Create` will do the right thing (including keeping this behaviour off by default for now) as long as `private` is set appropriately. Differential Revision: https://phabricator.services.mozilla.com/D152460