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

test/codegen/lib/html/element_types_constructors4_test.dart

Index: test/codegen/lib/html/element_types_constructors4_test.dart
diff --git a/test/codegen/lib/html/element_types_constructors4_test.dart b/test/codegen/lib/html/element_types_constructors4_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..38223c936adb1dca9e4b43de2ece3b93faeee9b7
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+++ b/test/codegen/lib/html/element_types_constructors4_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_constructors_test4;
+
+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('p', () => new ParagraphElement() is ParagraphElement);
+    check('param', () => new ParamElement() is ParamElement);
+    check('pre', () => new PreElement() is PreElement);
+    check('progress', () => new ProgressElement() is ProgressElement,
+        ProgressElement.supported);
+    check('q', () => new QuoteElement() is QuoteElement);
+    check('script', () => new ScriptElement() is ScriptElement);
+    check('select', () => new SelectElement() is SelectElement);
+    check('shadow',
+        () => new ShadowElement() is ShadowElement, ShadowElement.supported);
+    check('source', () => new SourceElement() is SourceElement);
+    check('span', () => new SpanElement() is SpanElement);
+    check('style', () => new StyleElement() is StyleElement);
+  });
+}