Start moving to the new canvas structure.

experimental/SkV8Example/js/sample.js

 /**
  * @fileoverview Sample onDraw script for use with SkV8Example.
  */
 var onDraw = function(){
   var tick = 0;
+  var p = new Path2D();
+  p.rect(0, 0, 200, 200);
+
   function f(context) {
     tick += 0.1;
-    context.fillStyle = '#0000ff';
-    context.fillRect(100, 100, Math.sin(tick)*100, Math.cos(tick)*100);
+
+    context.translate(context.width/2, context.height/2);
+    context.rotate(tick);
+    context.drawPath(p);
   };
   return f;
 }();
 
 function onTimeout() {
   inval();
   print(setTimeout(onTimeout, 33));
 }
 
 setTimeout(onTimeout, 33);