Remove generated directories with 100s of files.

client/dom/generated/src/wrapping/_AudioBufferWrappingImplementation.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 _AudioBufferWrappingImplementation extends DOMWrapperBase implements AudioBuffer {
-  _AudioBufferWrappingImplementation() : super() {}
-
-  static create__AudioBufferWrappingImplementation() native {
-    return new _AudioBufferWrappingImplementation();
-  }
-
-  num get duration() { return _get_duration(this); }
-  static num _get_duration(var _this) native;
-
-  num get gain() { return _get_gain(this); }
-  static num _get_gain(var _this) native;
-
-  void set gain(num value) { _set_gain(this, value); }
-  static void _set_gain(var _this, num value) native;
-
-  int get length() { return _get_length(this); }
-  static int _get_length(var _this) native;
-
-  int get numberOfChannels() { return _get_numberOfChannels(this); }
-  static int _get_numberOfChannels(var _this) native;
-
-  num get sampleRate() { return _get_sampleRate(this); }
-  static num _get_sampleRate(var _this) native;
-
-  Float32Array getChannelData(int channelIndex) {
-    return _getChannelData(this, channelIndex);
-  }
-  static Float32Array _getChannelData(receiver, channelIndex) native;
-
-  String get typeName() { return "AudioBuffer"; }
-}