[MediaStreamTrack-resizeMode.https.html?resizeMode=enabled]
  prefs: [media.getusermedia.camera.fake.force:true, media.navigator.streams.fake:false, media.navigator.video.resize_mode.enabled:true]

[MediaStreamTrack-resizeMode.https.html?resizeMode=disabled]
  prefs: [media.getusermedia.camera.fake.force:true, media.navigator.streams.fake:false, media.navigator.video.resize_mode.enabled:false]