Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_StorageInfoWrappingImplementation.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 _StorageInfoWrappingImplementation extends DOMWrapperBase implements StorageInfo {
-  _StorageInfoWrappingImplementation() : super() {}
-
-  static create__StorageInfoWrappingImplementation() native {
-    return new _StorageInfoWrappingImplementation();
-  }
-
-  void queryUsageAndQuota(int storageType, [StorageInfoUsageCallback usageCallback = null, StorageInfoErrorCallback errorCallback = null]) {
-    _queryUsageAndQuota(this, storageType, usageCallback, errorCallback);
-    return;
-  }
-  static void _queryUsageAndQuota(receiver, storageType, usageCallback, errorCallback) native;
-
-  void requestQuota(int storageType, int newQuotaInBytes, [StorageInfoQuotaCallback quotaCallback = null, StorageInfoErrorCallback errorCallback = null]) {
-    _requestQuota(this, storageType, newQuotaInBytes, quotaCallback, errorCallback);
-    return;
-  }
-  static void _requestQuota(receiver, storageType, newQuotaInBytes, quotaCallback, errorCallback) native;
-
-  String get typeName() { return "StorageInfo"; }
-}