static createVideoElement() {
    const video = /** @type {!HTMLVideoElement} */(document.createElement(
        'video'));

    // Some platforms have issues with audio-only playbacks on muted video
    // elements. Don't mute them.
    // Fuchsia reference: https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/platform/media/web_media_player_impl.cc;l=3535;drc=d23075f3
    if (deviceDetected.getDeviceName() !== 'Tizen' &&
        deviceDetected.getDeviceName() !== 'Chromecast with Fuchsia') {
      video.muted = true;
    }
    video.width = 600;
    video.height = 400;

    return video;
  }
Creates a muted, fixed size video element for testing.

@return {!HTMLVideoElement}