filter-effect-remove-unattached-ref.html

<!DOCTYPE html>
  <svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
  <defs id="svgDefs" style="display:none">
   <filter id="blurY" color-interpolation-filters="sRGB">
   </filter>
  </defs>
 </svg>

<img src="../resources/reference.png" style="filter: url(#blurY);">

<div id="other" style="width: 10px; height: 10px; background-color: blue;"></div>

chromium/third_party/blink/web_tests/external/wpt/css/filter-effects/reference/filter-effect-remove-unattached-ref.html