chromium/src/third_party/blink/web_tests/external/wpt/content-security-policy/securitypolicyviolation/support/testharness-helper.sub.js

function generateCrossOriginRedirectImage() {
  var target = "http://{{host}}:{{ports[https][0]}}/content-security-policy/support/pass.png";
  var url = "/common/redirect.py?location=" + encodeURIComponent(target);
  return { url: url, target: target }
}