Support 'Conditional' idl attribute.

client/dom/generated/src/wrapping/_PointerLockWrappingImplementation.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 _PointerLockWrappingImplementation extends DOMWrapperBase implements PointerLock {
-  _PointerLockWrappingImplementation() : super() {}
-
-  static create__PointerLockWrappingImplementation() native {
-    return new _PointerLockWrappingImplementation();
-  }
-
-  bool get isLocked() { return _get_isLocked(this); }
-  static bool _get_isLocked(var _this) native;
-
-  void lock(Element target, [VoidCallback successCallback = null, VoidCallback failureCallback = null]) {
-    if (successCallback === null) {
-      if (failureCallback === null) {
-        _lock(this, target);
-        return;
-      }
-    } else {
-      if (failureCallback === null) {
-        _lock_2(this, target, successCallback);
-        return;
-      } else {
-        _lock_3(this, target, successCallback, failureCallback);
-        return;
-      }
-    }
-    throw "Incorrect number or type of arguments";
-  }
-  static void _lock(receiver, target) native;
-  static void _lock_2(receiver, target, successCallback) native;
-  static void _lock_3(receiver, target, successCallback, failureCallback) native;
-
-  void unlock() {
-    _unlock(this);
-    return;
-  }
-  static void _unlock(receiver) native;
-
-  String get typeName() { return "PointerLock"; }
-}