[idlharness.html]
  type: testharness
  [URL interface: operation createFor(Blob)]
    expected: FAIL

  [FileReader interface: operation readAsBinaryString(Blob)]
    expected: FAIL

  [FileReader interface: new FileReader() must inherit property "readAsBinaryString" with the proper type (1)]
    expected: FAIL

  [FileReader interface: calling readAsBinaryString(Blob) on new FileReader() with too few arguments must throw TypeError]
    expected: FAIL

  [FileReader interface: new FileReader() must inherit property "readAsBinaryString(Blob)" with the proper type]
    expected: FAIL