chromium/src/third_party/blink/web_tests/external/wpt/fetch/cross-origin-resource-policy/resources/script.py

def main(request, response):
    headers = [(b"Cross-Origin-Resource-Policy", request.GET[b'corp'])]
    if b'origin' in request.headers:
        headers.append((b'Access-Control-Allow-Origin', request.headers[b'origin']))

    return 200, headers, b""