This is a testharness.js-based test.
Found 15 FAIL, 0 TIMEOUT, 0 NOTRUN.
[FAIL] XRCompositionLayer interface: attribute quality
  assert_true: The prototype object must have a property "quality" expected true got false
[FAIL] XRWebGLBinding interface: operation createQuadLayer(optional XRQuadLayerInit)
  assert_equals: property has wrong .length expected 0 but got 1
[FAIL] XRWebGLBinding interface: operation createCylinderLayer(optional XRCylinderLayerInit)
  assert_equals: property has wrong .length expected 0 but got 1
[FAIL] XRWebGLBinding interface: operation createEquirectLayer(optional XREquirectLayerInit)
  assert_equals: property has wrong .length expected 0 but got 1
[FAIL] XRWebGLBinding interface: operation createCubeLayer(optional XRCubeLayerInit)
  assert_equals: property has wrong .length expected 0 but got 1
[FAIL] XRWebGLBinding interface: operation foveateBoundTexture(GLenum, float)
  assert_own_property: interface prototype object missing non-static operation expected property "foveateBoundTexture" missing
[FAIL] XRMediaBinding interface: existence and properties of interface object
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface object length
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface object name
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface: existence and properties of interface prototype object
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface: existence and properties of interface prototype object's "constructor" property
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface: existence and properties of interface prototype object's @@unscopables property
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface: operation createQuadLayer(HTMLVideoElement, optional XRMediaQuadLayerInit)
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface: operation createCylinderLayer(HTMLVideoElement, optional XRMediaCylinderLayerInit)
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
[FAIL] XRMediaBinding interface: operation createEquirectLayer(HTMLVideoElement, optional XRMediaEquirectLayerInit)
  assert_own_property: self does not have own property "XRMediaBinding" expected property "XRMediaBinding" missing
Harness: the test ran to completion.