Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_DOMFileSystemSyncWrappingImplementation.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 _DOMFileSystemSyncWrappingImplementation extends DOMWrapperBase implements DOMFileSystemSync {
-  _DOMFileSystemSyncWrappingImplementation() : super() {}
-
-  static create__DOMFileSystemSyncWrappingImplementation() native {
-    return new _DOMFileSystemSyncWrappingImplementation();
-  }
-
-  String get name() { return _get_name(this); }
-  static String _get_name(var _this) native;
-
-  DirectoryEntrySync get root() { return _get_root(this); }
-  static DirectoryEntrySync _get_root(var _this) native;
-
-  String get typeName() { return "DOMFileSystemSync"; }
-}