Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_WebGLContextAttributesWrappingImplementation.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 _WebGLContextAttributesWrappingImplementation extends DOMWrapperBase implements WebGLContextAttributes {
-  _WebGLContextAttributesWrappingImplementation() : super() {}
-
-  static create__WebGLContextAttributesWrappingImplementation() native {
-    return new _WebGLContextAttributesWrappingImplementation();
-  }
-
-  bool get alpha() { return _get_alpha(this); }
-  static bool _get_alpha(var _this) native;
-
-  void set alpha(bool value) { _set_alpha(this, value); }
-  static void _set_alpha(var _this, bool value) native;
-
-  bool get antialias() { return _get_antialias(this); }
-  static bool _get_antialias(var _this) native;
-
-  void set antialias(bool value) { _set_antialias(this, value); }
-  static void _set_antialias(var _this, bool value) native;
-
-  bool get depth() { return _get_depth(this); }
-  static bool _get_depth(var _this) native;
-
-  void set depth(bool value) { _set_depth(this, value); }
-  static void _set_depth(var _this, bool value) native;
-
-  bool get premultipliedAlpha() { return _get_premultipliedAlpha(this); }
-  static bool _get_premultipliedAlpha(var _this) native;
-
-  void set premultipliedAlpha(bool value) { _set_premultipliedAlpha(this, value); }
-  static void _set_premultipliedAlpha(var _this, bool value) native;
-
-  bool get preserveDrawingBuffer() { return _get_preserveDrawingBuffer(this); }
-  static bool _get_preserveDrawingBuffer(var _this) native;
-
-  void set preserveDrawingBuffer(bool value) { _set_preserveDrawingBuffer(this, value); }
-  static void _set_preserveDrawingBuffer(var _this, bool value) native;
-
-  bool get stencil() { return _get_stencil(this); }
-  static bool _get_stencil(var _this) native;
-
-  void set stencil(bool value) { _set_stencil(this, value); }
-  static void _set_stencil(var _this, bool value) native;
-
-  String get typeName() { return "WebGLContextAttributes"; }
-}