case MediaToggleClosedCaptionsButtonPart:
m_value.valueID = CSSValueMediaToggleClosedCaptionsButton;
break;
+ case MediaCastOffButtonPart:
+ m_value.valueID = CSSValueInternalMediaCastOffButton;
+ break;
+ case MediaOverlayCastOffButtonPart:
+ m_value.valueID = CSSValueInternalMediaOverlayCastOffButton;
+ break;
case MediaSliderPart:
m_value.valueID = CSSValueMediaSlider;
break;