Generate dart:html bindings for Dartium as well as Frog. All unittests now pass (or are disabled fo…

client/html/src/_DOMTypeBase.dart

+// Copyright (c) 2011, 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.
+
+class _DOMTypeBase {
+  final _ptr;
+
+  _DOMTypeBase._wrap(this._ptr) {
+        // We should never be creating duplicate wrappers.
+        // TODO(jacobr): this boolean value is evaluated outside of the assert
+        // to work around a mysterious and flaky bug in tip of trunk versions of
+        // chrome.
+        bool hasExistingWrapper = _ptr.dartObjectLocalStorage === null;
+        assert(hasExistingWrapper);
+          _ptr.dartObjectLocalStorage = this;
+  }
+}
+
+/** This function is provided for unittest purposes only. */
+unwrapDomObject(_DOMTypeBase wrapper) {
+  return wrapper._ptr;
+}