A bunch of fixes in idl database generator.

client/dom/generated/src/wrapping/_HTMLContentElementWrappingImplementation.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.
+
+// WARNING: Do not edit - generated code.
+
+class _HTMLContentElementWrappingImplementation extends _HTMLElementWrappingImplementation implements HTMLContentElement {
+  _HTMLContentElementWrappingImplementation() : super() {}
+
+  static create__HTMLContentElementWrappingImplementation() native {
+    return new _HTMLContentElementWrappingImplementation();
+  }
+
+  String get select() { return _get_select(this); }
+  static String _get_select(var _this) native;
+
+  void set select(String value) { _set_select(this, value); }
+  static void _set_select(var _this, String value) native;
+
+  String get typeName() { return "HTMLContentElement"; }
+}