Add all dart:html tests from the sdk to test/codegen.

test/codegen/lib/html/element_types_constructors5_test.dart

Index: test/codegen/lib/html/element_types_constructors5_test.dart
diff --git a/test/codegen/lib/html/element_types_constructors5_test.dart b/test/codegen/lib/html/element_types_constructors5_test.dart
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index 0000000000000000000000000000000000000000..e930ac1c89aadab54cc35a923c7599361250c439
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+++ b/test/codegen/lib/html/element_types_constructors5_test.dart
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+// 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 element_types_constructors5_test;
+
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_individual_config.dart';
+import 'dart:html';
+
+main() {
+  useHtmlIndividualConfiguration();
+
+  check(String name, bool fn(), [bool supported = true]) {
+    test(name, () {
+      var expectation = supported ? returnsNormally : throws;
+      expect(() {
+        expect(fn(), isTrue);
+      }, expectation);
+    });
+  }
+
+  group('constructors', () {
+    check('table', () => new TableElement() is TableElement);
+    check('template', () => new TemplateElement() is TemplateElement,
+        TemplateElement.supported);
+    check('textarea', () => new TextAreaElement() is TextAreaElement);
+    check('title', () => new TitleElement() is TitleElement);
+    check('td', () => new TableCellElement() is TableCellElement);
+    check('col', () => new TableColElement() is TableColElement);
+    check('colgroup', () => new Element.tag('colgroup') is TableColElement);
+    check('tr', () => new TableRowElement() is TableRowElement);
+    check('tbody', () => new Element.tag('tbody') is TableSectionElement);
+    check('tfoot', () => new Element.tag('tfoot') is TableSectionElement);
+    check('thead', () => new Element.tag('thead') is TableSectionElement);
+    check('track', () => new TrackElement() is TrackElement,
+        TrackElement.supported);
+  });
+}