Migrate dom tests to dart:html.

tests/dom/wrapper_test.dart

 #library('WrapperTest');
 #import('../../lib/unittest/unittest.dart');
-#import('../../lib/unittest/dom_config.dart');
-#import('dart:dom');
+#import('../../lib/unittest/html_config.dart');
+#import('dart:html');
 
 main() {
-  HTMLCanvasElement canvas;
+  CanvasElement canvas;
   CanvasRenderingContext2D context;
 
-  canvas = document.createElement('canvas');
+  canvas = new Element.tag('canvas');
   canvas.id = 'canvas';
-  canvas.setAttribute('width', '100');
-  canvas.setAttribute('height', '100');
-  document.body.appendChild(canvas);
+  canvas.attributes['width'] = '100';

[Anton Muhin, 2012/04/27 12:06:34]

ditto

+  canvas.attributes['height'] = '100';
+  document.body.nodes.add(canvas);
   context = canvas.getContext('2d');
 
-  useDomConfiguration();
+  useHtmlConfiguration();
   test('DomType', () {
     Expect.isTrue(canvas is DOMType);
     Expect.isTrue(context is DOMType);
   });
   test('ObjectLocalStorage', () {
-    final element = document.getElementById('canvas');
+    final element = document.query('#canvas');
     element.dartObjectLocalStorage = 42;
 
     Expect.equals(42, canvas.dynamic.dartObjectLocalStorage);
   });
   test('TypeName', () {
-    final element = document.getElementById('canvas');
-    Expect.stringEquals('HTMLCanvasElement', element.typeName);
-    Expect.stringEquals('HTMLCanvasElement', canvas.dynamic.typeName);
+    final element = document.query('#canvas');
+    Expect.stringEquals('CanvasElement', element.typeName);
+    Expect.stringEquals('CanvasElement', canvas.dynamic.typeName);
     Expect.stringEquals('CanvasRenderingContext2D', context.dynamic.typeName);
   });
 }