chromium/content/test/data/gpu/webgl-domain-blocking-page2.html

<html>
<head>
<script type="text/javascript">
var gl;
var gotGL = false;
var initFinished = false;

function init()
{
  var canvas = document.getElementById('c');
  gl = canvas.getContext('webgl');
  if (gl) {
    gotGL = true;
  }
  initFinished = true;
}
</script>
</head>
<body bgcolor="lightgray" onload="init()">
<canvas id="c" width="400" height="300" style="border-width: 1px; border-style: solid;"></canvas>
</body>
</html>