chromium/third_party/blink/web_tests/http/tests/canvas/resources/blur.svg

<svg width="0" height="0" xmlns="http://www.w3.org/2000/svg" version="1.1">
  <defs>
    <filter id="blur">
      <feGaussianBlur stdDeviation="3 3"/>
    </filter>
  </defs>
</svg>