This is a testharness.js-based test.
[FAIL] Cannot reuse attached transforms
  promise_test: Unhandled rejection with value: object "ReferenceError: RTCRtpSFrameEncrypter is not defined"
[FAIL] SFrameEncrypterStream exposes readable and writable
  SFrameEncrypterStream is not defined
[FAIL] SFrame with array buffer - AES_128_CTR_HMAC_SHA256_80
  promise_test: Unhandled rejection with value: object "TypeError: Cannot read properties of undefined (reading 'importKey')"
[FAIL] SFrame decryption with array buffer that is too small
  promise_test: Unhandled rejection with value: object "TypeError: Cannot read properties of undefined (reading 'importKey')"
[FAIL] SFrame transform gets errored if trying to process unexpected value types
  promise_test: Unhandled rejection with value: object "TypeError: Cannot read properties of undefined (reading 'importKey')"
Harness: the test ran to completion.