Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_MediaStreamTrackWrappingImplementation.dart

Index: client/dom/generated/src/wrapping/_MediaStreamTrackWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_MediaStreamTrackWrappingImplementation.dart b/client/dom/generated/src/wrapping/_MediaStreamTrackWrappingImplementation.dart
deleted file mode 100644
index bee6e9c56740d7151136663f681cfcdaae9b3d69..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_MediaStreamTrackWrappingImplementation.dart
+++ /dev/null
@@ -1,27 +0,0 @@
-// 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 _MediaStreamTrackWrappingImplementation extends DOMWrapperBase implements MediaStreamTrack {
-  _MediaStreamTrackWrappingImplementation() : super() {}
-
-  static create__MediaStreamTrackWrappingImplementation() native {
-    return new _MediaStreamTrackWrappingImplementation();
-  }
-
-  bool get enabled() { return _get_enabled(this); }
-  static bool _get_enabled(var _this) native;
-
-  void set enabled(bool value) { _set_enabled(this, value); }
-  static void _set_enabled(var _this, bool value) native;
-
-  String get kind() { return _get_kind(this); }
-  static String _get_kind(var _this) native;
-
-  String get label() { return _get_label(this); }
-  static String _get_label(var _this) native;
-
-  String get typeName() { return "MediaStreamTrack"; }
-}