Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/external/wpt/css/css-paint-api/invalid-image-constructor-error-ref.html 

<!DOCTYPE html>
<html>
<canvas id="canvas" width="100" height="100"></canvas>
<script>
  var canvas = document.getElementById("canvas");
  var ctx = canvas.getContext('2d');
  ctx.fillStyle = 'green';
  ctx.fillRect(50, 50, 50, 50);
</script>
</html>