Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/wrapping/_WebGLDebugShadersWrappingImplementation.dart
diff --git a/client/dom/generated/src/wrapping/_WebGLDebugShadersWrappingImplementation.dart b/client/dom/generated/src/wrapping/_WebGLDebugShadersWrappingImplementation.dart
deleted file mode 100644
index 7c30d506329bee951d8f969749e0b80ef1debbb1..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/wrapping/_WebGLDebugShadersWrappingImplementation.dart
+++ /dev/null
@@ -1,20 +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 _WebGLDebugShadersWrappingImplementation extends DOMWrapperBase implements WebGLDebugShaders {
-  _WebGLDebugShadersWrappingImplementation() : super() {}
-
-  static create__WebGLDebugShadersWrappingImplementation() native {
-    return new _WebGLDebugShadersWrappingImplementation();
-  }
-
-  String getTranslatedShaderSource(WebGLShader shader) {
-    return _getTranslatedShaderSource(this, shader);
-  }
-  static String _getTranslatedShaderSource(receiver, shader) native;
-
-  String get typeName() { return "WebGLDebugShaders"; }
-}