Don't start up a virtual display even when requested on PhantomJS.
Don't start up a virtual display even when requested on PhantomJS.

beni55/web-animations-js-legacy,web-animations/web-animations-js-legacy,beni55/web-animations-js-legacy,birtles/web-animations-js,beni55/web-animations-js-legacy,web-animations/web-animations-js-legacy,birtles/web-animations-js,beni55/web-animations-js-legacy,web-animations/web-animations-js-legacy,birtles/web-animations-js