Function writeSafeFrame

test/integration/test-amphtml-ads.js:503–508

* Write the HTML page into the provided iframe, turn it into a safe frame * then add it to the document.

(doc, iframe, adContent)

 * then add it to the document.
 */
function writeSafeFrame(doc, iframe, adContent) {
  iframe.name = `1-0-31;${adContent.length};${adContent}{"uid": "test"}`;
  iframe.src =
    '//iframe.localhost:9876/test/fixtures/served/iframe-safeframe.html';
  doc.body.appendChild(iframe);
}

/**
 * Unregister the specified iframe from the host script at the specified window.