Merge the openglui samples into one.

samples/simplegl/web/gl_driver.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library gl_driver;
-
-import 'dart:html';
-import 'gl.dart';
-
-/**
- * A driver to run GL applications in the browser.
- */
-void glMain(setup, resize, draw) {
-  // Setup a Canvas for GL to run inside.
-  final canvas = new CanvasElement(width: window.innerWidth, height: window.innerHeight);
-  document.body.nodes.add(canvas);
-
-  gl = canvas.getContext('experimental-webgl');
-
-  // The first 'setup' entry point is called once.
-  setup(canvas.width, canvas.height);
-
-  // The second 'render' entry point is called each time the canvas should
-  // be re-drawn.
-  var render;
-  render = (n) {
-    draw();
-    window.requestAnimationFrame(render);
-  };
-  render(0);
-
-  window.on.resize.add((e) {
-    canvas.width = window.innerWidth;
-    canvas.height = window.innerHeight;
-    resize(canvas.width, canvas.height);
-  });
-}