chromium/third_party/blink/web_tests/fast/canvas/canvas-filter-shadow-copy-expected.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(25, 25, 50, 40);
ctx.fillStyle = 'black';
ctx.fillRect(25, 65, 50, 10);
</script>