Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_DOMURLWrappingImplementation.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 _DOMURLWrappingImplementation extends DOMWrapperBase implements DOMURL {
-  _DOMURLWrappingImplementation() : super() {}
-
-  static create__DOMURLWrappingImplementation() native {
-    return new _DOMURLWrappingImplementation();
-  }
-
-  String createObjectURL(var blob_OR_stream) {
-    if (blob_OR_stream is MediaStream) {
-      return _createObjectURL(this, blob_OR_stream);
-    } else {
-      if (blob_OR_stream is Blob) {
-        return _createObjectURL_2(this, blob_OR_stream);
-      }
-    }
-    throw "Incorrect number or type of arguments";
-  }
-  static String _createObjectURL(receiver, blob_OR_stream) native;
-  static String _createObjectURL_2(receiver, blob_OR_stream) native;
-
-  void revokeObjectURL(String url) {
-    _revokeObjectURL(this, url);
-    return;
-  }
-  static void _revokeObjectURL(receiver, url) native;
-
-  String get typeName() { return "DOMURL"; }
-}