This is a testharness.js-based test.
[FAIL] brotli empty data should be reinflated back to its origin
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'CompressionStream': Unsupported compression format: 'brotli'"
[FAIL] brotli small amount data should be reinflated back to its origin
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'CompressionStream': Unsupported compression format: 'brotli'"
[FAIL] brotli large amount data should be reinflated back to its origin
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'CompressionStream': Unsupported compression format: 'brotli'"
Harness: the test ran to completion.