content/test/data/gpu/wait_for_compositing.html

<!DOCTYPE HTML>
<html>
<head>
<meta name="viewport" content="initial-scale=1">
<title></title>
<style type="text/css">
.nomargin {
  margin: 0px auto;
}
</style>
<script>
var g_swaps_before_success = 7;

function scheduleNextFrame() {
  document.body.style.backgroundColor =
      (g_swaps_before_success % 2 === 0) ? 'blue' : 'green';
  if (window.chrome && chrome.gpuBenchmarking &&
      chrome.gpuBenchmarking.addSwapCompletionEventListener) {
    chrome.gpuBenchmarking.addSwapCompletionEventListener(
        waitForSwapsToComplete);
  } else {
    window.requestAnimationFrame(waitForSwapsToComplete);
  }
}

function waitForSwapsToComplete() {
  g_swaps_before_success--;
  if (g_swaps_before_success > 0) {
    window.requestAnimationFrame(scheduleNextFrame);
  } else {
    domAutomationController.send("SUCCESS");
  }
}

function main() {
  window.requestAnimationFrame(scheduleNextFrame);
}
</script>
</head>
<body onload="main()">
</body>
</html>