Function createPixel

test/unit/builtins/test-amp-pixel.js:28–36

(src, referrerPolicy)

  });

  function createPixel(src, referrerPolicy) {
    pixel = win.document.createElement('amp-pixel');
    pixel.setAttribute('src', src);
    if (referrerPolicy) {
      pixel.setAttribute('referrerpolicy', referrerPolicy);
    }
    win.document.body.appendChild(pixel);
    return pixel.buildInternal();
  }

  /**
   * @param {string=} opt_src