This is a testharness.js-based test.
[FAIL] chunk of type ArrayBuffer should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Int8Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Uint8Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Uint8ClampedArray should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Int16Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Uint16Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Int32Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Uint32Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Float16Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Float32Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type Float64Array should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
[FAIL] chunk of type DataView should work for brotli
  promise_test: Unhandled rejection with value: object "TypeError: Failed to construct 'DecompressionStream': Unsupported compression format: 'brotli'"
Harness: the test ran to completion.