chromium/third_party/blink/web_tests/platform/mac-mac11/external/wpt/webmessaging/event.origin.sub-expected.txt

This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = Uncaught ReferenceError: PostMessageTest is not defined
Harness: the test ran to completion.