Support 'Conditional' idl attribute.

client/dom/generated/src/wrapping/_MutationRecordWrappingImplementation.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 _MutationRecordWrappingImplementation extends DOMWrapperBase implements MutationRecord {
-  _MutationRecordWrappingImplementation() : super() {}
-
-  static create__MutationRecordWrappingImplementation() native {
-    return new _MutationRecordWrappingImplementation();
-  }
-
-  NodeList get addedNodes() { return _get_addedNodes(this); }
-  static NodeList _get_addedNodes(var _this) native;
-
-  String get attributeName() { return _get_attributeName(this); }
-  static String _get_attributeName(var _this) native;
-
-  String get attributeNamespace() { return _get_attributeNamespace(this); }
-  static String _get_attributeNamespace(var _this) native;
-
-  Node get nextSibling() { return _get_nextSibling(this); }
-  static Node _get_nextSibling(var _this) native;
-
-  String get oldValue() { return _get_oldValue(this); }
-  static String _get_oldValue(var _this) native;
-
-  Node get previousSibling() { return _get_previousSibling(this); }
-  static Node _get_previousSibling(var _this) native;
-
-  NodeList get removedNodes() { return _get_removedNodes(this); }
-  static NodeList _get_removedNodes(var _this) native;
-
-  Node get target() { return _get_target(this); }
-  static Node _get_target(var _this) native;
-
-  String get type() { return _get_type(this); }
-  static String _get_type(var _this) native;
-
-  String get typeName() { return "MutationRecord"; }
-}