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chromium/third_party/blink/web_tests/svg/custom/visibility-collapse.html 

<!DOCTYPE HTML>
<svg>
  <rect width="100" height="100" fill="red" visibility="collapse"/>
  <image xlink:href="resources/red-checker.png" x="110" width="100" height="100" visibility="collapse"/>
  <text y="125">
    <tspan text-decoration="underline" visibility="collapse">
      <tspan visibility="visible">PASS if underlined</tspan>
    </tspan>
  </text>
</svg>
<p><span style="text-decoration: underline; visibility: collapse;"><span style="visibility: visible">
PASS if underlined</span></span></p>