Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_HTMLEmbedElementWrappingImplementation.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 _HTMLEmbedElementWrappingImplementation extends _HTMLElementWrappingImplementation implements HTMLEmbedElement {
-  _HTMLEmbedElementWrappingImplementation() : super() {}
-
-  static create__HTMLEmbedElementWrappingImplementation() native {
-    return new _HTMLEmbedElementWrappingImplementation();
-  }
-
-  String get align() { return _get_align(this); }
-  static String _get_align(var _this) native;
-
-  void set align(String value) { _set_align(this, value); }
-  static void _set_align(var _this, String value) native;
-
-  String get height() { return _get_height(this); }
-  static String _get_height(var _this) native;
-
-  void set height(String value) { _set_height(this, value); }
-  static void _set_height(var _this, String value) native;
-
-  String get name() { return _get_name(this); }
-  static String _get_name(var _this) native;
-
-  void set name(String value) { _set_name(this, value); }
-  static void _set_name(var _this, String value) native;
-
-  String get src() { return _get_src(this); }
-  static String _get_src(var _this) native;
-
-  void set src(String value) { _set_src(this, value); }
-  static void _set_src(var _this, String value) native;
-
-  String get type() { return _get_type(this); }
-  static String _get_type(var _this) native;
-
-  void set type(String value) { _set_type(this, value); }
-  static void _set_type(var _this, String value) native;
-
-  String get width() { return _get_width(this); }
-  static String _get_width(var _this) native;
-
-  void set width(String value) { _set_width(this, value); }
-  static void _set_width(var _this, String value) native;
-
-  SVGDocument getSVGDocument() {
-    return _getSVGDocument(this);
-  }
-  static SVGDocument _getSVGDocument(receiver) native;
-
-  String get typeName() { return "HTMLEmbedElement"; }
-}