This is a testharness.js-based test.
[FAIL] webkitSpeechGrammar interface should not exist
  assert_false: expected false got true
[FAIL] webkitSpeechGrammarList interface should not exist
  assert_false: expected false got true
[FAIL] webkitSpeechRecognition interface should not exist
  assert_false: expected false got true
[FAIL] webkitSpeechRecognitionError interface should not exist
  assert_false: expected false got true
[FAIL] webkitSpeechRecognitionEvent interface should not exist
  assert_false: expected false got true
Harness: the test ran to completion.