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chromium/third_party/blink/web_tests/external/wpt/svg/layout/svg-foreign-relayout-001.html 

<!DOCTYPE html>
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1462742">
<link rel="match" href="../../css/reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<svg width=100 height=100>
  <foreignObject id=target width=0 height=100>
    <canvas id=inner style="background: green; position: absolute; width: 100px; height: 100px; left: 0; top: 0;"></canvas>
  </foreignObject>
</svg>
<script>
document.body.offsetTop;
document.getElementById('inner').width = '100';
document.getElementById('target').setAttribute('width', '100');
</script>