chromium/third_party/blink/web_tests/external/wpt/images/pattern.svg

<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20">
  <rect x="00" y="00" width="10" height="10" fill="#ff0000"/>
  <rect x="10" y="00" width="10" height="10" fill="#00ff00"/>
  <rect x="00" y="10" width="10" height="10" fill="#0000ff"/>
  <rect x="10" y="10" width="10" height="10" fill="#000000"/>
</svg>