Tests MediaStreamTrack.getCapabilities.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


video track capabilities:
  capabilities.aspectRatio = { max: 1.778, min: 1 }
  capabilities.deviceId = <UUID>
  capabilities.facingMode = [ user ]
  capabilities.frameRate = { max: 30, min: 5 }
  capabilities.height = { max: 720, min: 1 }
  capabilities.width = { max: 1280, min: 1 }

audio track capabilities:
  capabilities.deviceId = <UUID>
  capabilities.echoCancellation = [ true, true ]
  capabilities.sampleRate = { max: 48000, min: 44100 }
  capabilities.volume = { max: 1, min: 0 }

PASS successfullyParsed is true

TEST COMPLETE