chromium/third_party/blink/web_tests/external/wpt/infrastructure/webdriver/bidi/subscription-expected.txt

This is a testharness.js-based test.
[FAIL] Assert testdriver can subscribe and receive events
  promise_test: Unhandled rejection with value: object "Error: bidi.log.entry_added.subscribe is not implemented by testdriver-vendor.js"
Harness: the test ran to completion.