1. @DomName('HTMLVideoElement.getVideoPlaybackQuality')
  2. @DocsEditable()
  3. @Experimental()
VideoPlaybackQuality getVideoPlaybackQuality()

Source 

@DomName('HTMLVideoElement.getVideoPlaybackQuality')
@DocsEditable()
@Experimental() // untriaged
VideoPlaybackQuality getVideoPlaybackQuality() =>
    _blink.BlinkHTMLVideoElement.instance
        .getVideoPlaybackQuality_Callback_0_(this);