Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_HTMLBaseFontElementWrappingImplementation.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 _HTMLBaseFontElementWrappingImplementation extends _HTMLElementWrappingImplementation implements HTMLBaseFontElement {
-  _HTMLBaseFontElementWrappingImplementation() : super() {}
-
-  static create__HTMLBaseFontElementWrappingImplementation() native {
-    return new _HTMLBaseFontElementWrappingImplementation();
-  }
-
-  String get color() { return _get_color(this); }
-  static String _get_color(var _this) native;
-
-  void set color(String value) { _set_color(this, value); }
-  static void _set_color(var _this, String value) native;
-
-  String get face() { return _get_face(this); }
-  static String _get_face(var _this) native;
-
-  void set face(String value) { _set_face(this, value); }
-  static void _set_face(var _this, String value) native;
-
-  int get size() { return _get_size(this); }
-  static int _get_size(var _this) native;
-
-  void set size(int value) { _set_size(this, value); }
-  static void _set_size(var _this, int value) native;
-
-  String get typeName() { return "HTMLBaseFontElement"; }
-}