[dangling-markup-mitigation-data-url.tentative.sub.html]
  [<iframe id="dangling"\\n        src="data:text/html,\\n            <img\\n              onload='window.parent.postMessage(&quot;loaded&quot;, &quot;*&quot;);'\\n              onerror='window.parent.postMessage(&quot;error&quot;, &quot;*&quot;);'\\n              src='http://web-platform.test:8000/images/gr&#10;een-256x256.png?&lt;'>\\n        ">\\n     </iframe>]
    expected: FAIL

  [<iframe id="dangling"\\n        src="     data:text/html,\\n            <img\\n              onload='window.parent.postMessage(&quot;loaded&quot;, &quot;*&quot;);'\\n              onerror='window.parent.postMessage(&quot;error&quot;, &quot;*&quot;);'\\n              src='http://web-platform.test:8000/images/gr&#10;een-256x256.png?&lt;'>\\n        ">\\n     </iframe>]
    expected: FAIL

  [<iframe id="dangling"\\n        src="\\ndata:text/html,\\n            <img\\n              onload='window.parent.postMessage(&quot;loaded&quot;, &quot;*&quot;);'\\n              onerror='window.parent.postMessage(&quot;error&quot;, &quot;*&quot;);'\\n              src='http://web-platform.test:8000/images/gr&#10;een-256x256.png?&lt;'>\\n        ">\\n     </iframe>]
    expected: FAIL

  [<iframe id="dangling"\\n        src="&#10;data:text/html,\\n            <img\\n              onload='window.parent.postMessage(&quot;loaded&quot;, &quot;*&quot;);'\\n              onerror='window.parent.postMessage(&quot;error&quot;, &quot;*&quot;);'\\n              src='http://web-platform.test:8000/images/gr&#10;een-256x256.png?&lt;'>\\n        ">\\n     </iframe>]
    expected: FAIL

  [<iframe id="dangling"\\n        src="\\tdata:text/html,\\n            <img\\n              onload='window.parent.postMessage(&quot;loaded&quot;, &quot;*&quot;);'\\n              onerror='window.parent.postMessage(&quot;error&quot;, &quot;*&quot;);'\\n              src='http://web-platform.test:8000/images/gr&#10;een-256x256.png?&lt;'>\\n        ">\\n     </iframe>]
    expected: FAIL

  [<iframe id="dangling"\\n        src="\\rdata:text/html,\\n            <img\\n              onload='window.parent.postMessage(&quot;loaded&quot;, &quot;*&quot;);'\\n              onerror='window.parent.postMessage(&quot;error&quot;, &quot;*&quot;);'\\n              src='http://web-platform.test:8000/images/gr&#10;een-256x256.png?&lt;'>\\n        ">\\n     </iframe>]
    expected: FAIL