chromium/third_party/blink/web_tests/external/wpt/css/selectors/media/sound-state-expected.txt

This is a testharness.js-based test.
[FAIL] Test :pseudo-class syntax is supported without throwing a SyntaxError
  assert_unreached: :muted is not supported Reached unreachable code
[FAIL] Test :muted pseudo-class
  promise_test: Unhandled rejection with value: object "SyntaxError: Failed to execute 'querySelector' on 'Document': 'video:muted' is not a valid selector."
Harness: the test ran to completion.