New version of dart:html

client/html/generated/src/wrapping/_FileEntryWrappingImplementation.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 FileEntryWrappingImplementation extends EntryWrappingImplementation implements FileEntry {
   FileEntryWrappingImplementation._wrap(ptr) : super._wrap(ptr) {}
 
-  void createWriter(FileWriterCallback successCallback, [ErrorCallback errorCallback = null]) {
+  void createWriter(FileWriterCallback successCallback, [ErrorCallback errorCallback]) {
     if (errorCallback === null) {
-      _ptr.createWriter(LevelDom.unwrap(successCallback));
+      _ptr.createWriter(successCallback);
       return;
     } else {
-      _ptr.createWriter(LevelDom.unwrap(successCallback), LevelDom.unwrap(errorCallback));
+      _ptr.createWriter(successCallback, LevelDom.unwrap(errorCallback));
       return;
     }
   }
 
-  void file(FileCallback successCallback, [ErrorCallback errorCallback = null]) {
+  void file(FileCallback successCallback, [ErrorCallback errorCallback]) {
     if (errorCallback === null) {
-      _ptr.file(LevelDom.unwrap(successCallback));
+      _ptr.file(successCallback);
       return;
     } else {
-      _ptr.file(LevelDom.unwrap(successCallback), LevelDom.unwrap(errorCallback));
+      _ptr.file(successCallback, LevelDom.unwrap(errorCallback));
       return;
     }
   }
 }