Mark VoidCallback as a [Callback]

client/dom/generated/src/wrapping/_VoidCallbackWrappingImplementation.dart

Index: client/dom/generated/src/wrapping/_VoidCallbackWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_VoidCallbackWrappingImplementation.dart b/client/dom/generated/src/wrapping/_VoidCallbackWrappingImplementation.dart
deleted file mode 100644
index 8655cdd5d326a663ba5e8f7938e416a7e661db40..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_VoidCallbackWrappingImplementation.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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 _VoidCallbackWrappingImplementation extends DOMWrapperBase implements VoidCallback {
-  _VoidCallbackWrappingImplementation() : super() {}
-
-  static create__VoidCallbackWrappingImplementation() native {
-    return new _VoidCallbackWrappingImplementation();
-  }
-
-  void handleEvent() {
-    _handleEvent(this);
-    return;
-  }
-  static void _handleEvent(receiver) native;
-
-  String get typeName() { return "VoidCallback"; }
-}