[idlharness.worker.html]
  [OffscreenCanvasRenderingContext2D interface: attribute filter]
    expected: FAIL

  [TextMetrics interface: attribute emHeightAscent]
    expected: FAIL

  [TextMetrics interface: attribute ideographicBaseline]
    expected: FAIL

  [OffscreenCanvasRenderingContext2D interface: attribute imageSmoothingQuality]
    expected: FAIL

  [TextMetrics interface: attribute emHeightDescent]
    expected: FAIL

  [TextMetrics interface: attribute hangingBaseline]
    expected: FAIL

  [TextMetrics interface: attribute fontBoundingBoxAscent]
    expected: FAIL

  [TextMetrics interface: attribute alphabeticBaseline]
    expected: FAIL

  [TextMetrics interface: attribute fontBoundingBoxDescent]
    expected: FAIL

  [ImageData interface: attribute colorSpace]
    expected: FAIL

  [OffscreenCanvasRenderingContext2D interface: attribute fontStretch]
    expected: FAIL

  [OffscreenCanvasRenderingContext2D interface: attribute fontVariantCaps]
    expected: FAIL

  [OffscreenCanvasRenderingContext2D interface: attribute textRendering]
    expected: FAIL

  [OffscreenCanvasRenderingContext2D interface: operation isContextLost()]
    expected: FAIL