[request-headers.any.html]
[Adding invalid request header "Set-Cookie: KO"]
expected: FAIL
[Adding invalid request header "Access-Control-Request-Private-Network: KO"]
expected: FAIL
[request-headers.any.worker.html]
[Adding invalid request header "Set-Cookie: KO"]
expected: FAIL
[Adding invalid request header "Access-Control-Request-Private-Network: KO"]
expected: FAIL
[request-headers.any.serviceworker.html]
expected: ERROR
[request-headers.any.sharedworker.html]
expected: ERROR