Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_IDBFactoryWrappingImplementation.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 _IDBFactoryWrappingImplementation extends DOMWrapperBase implements IDBFactory {
-  _IDBFactoryWrappingImplementation() : super() {}
-
-  static create__IDBFactoryWrappingImplementation() native {
-    return new _IDBFactoryWrappingImplementation();
-  }
-
-  int cmp(IDBKey first, IDBKey second) {
-    return _cmp(this, first, second);
-  }
-  static int _cmp(receiver, first, second) native;
-
-  IDBVersionChangeRequest deleteDatabase(String name) {
-    return _deleteDatabase(this, name);
-  }
-  static IDBVersionChangeRequest _deleteDatabase(receiver, name) native;
-
-  IDBRequest getDatabaseNames() {
-    return _getDatabaseNames(this);
-  }
-  static IDBRequest _getDatabaseNames(receiver) native;
-
-  IDBRequest open(String name) {
-    return _open(this, name);
-  }
-  static IDBRequest _open(receiver, name) native;
-
-  String get typeName() { return "IDBFactory"; }
-}