Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_DatabaseWrappingImplementation.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 _DatabaseWrappingImplementation extends DOMWrapperBase implements Database {
-  _DatabaseWrappingImplementation() : super() {}
-
-  static create__DatabaseWrappingImplementation() native {
-    return new _DatabaseWrappingImplementation();
-  }
-
-  String get version() { return _get_version(this); }
-  static String _get_version(var _this) native;
-
-  void changeVersion(String oldVersion, String newVersion, [SQLTransactionCallback callback = null, SQLTransactionErrorCallback errorCallback = null, VoidCallback successCallback = null]) {
-    _changeVersion(this, oldVersion, newVersion, callback, errorCallback, successCallback);
-    return;
-  }
-  static void _changeVersion(receiver, oldVersion, newVersion, callback, errorCallback, successCallback) native;
-
-  void readTransaction(SQLTransactionCallback callback, [SQLTransactionErrorCallback errorCallback = null, VoidCallback successCallback = null]) {
-    _readTransaction(this, callback, errorCallback, successCallback);
-    return;
-  }
-  static void _readTransaction(receiver, callback, errorCallback, successCallback) native;
-
-  void transaction(SQLTransactionCallback callback, [SQLTransactionErrorCallback errorCallback = null, VoidCallback successCallback = null]) {
-    _transaction(this, callback, errorCallback, successCallback);
-    return;
-  }
-  static void _transaction(receiver, callback, errorCallback, successCallback) native;
-
-  String get typeName() { return "Database"; }
-}