Chrome Extension Canvas

<!DOCTYPE html>
<html>
<head>
<canvas id=”TimeStamp” width="200" height="100"></canvas>
<script>
var c = document.getElementById("TimeStamp");
var ctx = c.getContext("2d");
ctx.font = "30px Arial";
ctx.fillText("Hello World",10,50);
</script>
</head>
</body>
</html>