Remove generated directories with 100s of files.

client/dom/generated/src/interface/Range.dart

-// Copyright (c) 2012, 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.
-
-interface Range {
-
-  static final int END_TO_END = 2;
-
-  static final int END_TO_START = 3;
-
-  static final int NODE_AFTER = 1;
-
-  static final int NODE_BEFORE = 0;
-
-  static final int NODE_BEFORE_AND_AFTER = 2;
-
-  static final int NODE_INSIDE = 3;
-
-  static final int START_TO_END = 1;
-
-  static final int START_TO_START = 0;
-
-  final bool collapsed;
-
-  final Node commonAncestorContainer;
-
-  final Node endContainer;
-
-  final int endOffset;
-
-  final Node startContainer;
-
-  final int startOffset;
-
-  DocumentFragment cloneContents();
-
-  Range cloneRange();
-
-  void collapse(bool toStart);
-
-  int compareNode(Node refNode);
-
-  int comparePoint(Node refNode, int offset);
-
-  DocumentFragment createContextualFragment(String html);
-
-  void deleteContents();
-
-  void detach();
-
-  void expand(String unit);
-
-  DocumentFragment extractContents();
-
-  ClientRect getBoundingClientRect();
-
-  ClientRectList getClientRects();
-
-  void insertNode(Node newNode);
-
-  bool intersectsNode(Node refNode);
-
-  bool isPointInRange(Node refNode, int offset);
-
-  void selectNode(Node refNode);
-
-  void selectNodeContents(Node refNode);
-
-  void setEnd(Node refNode, int offset);
-
-  void setEndAfter(Node refNode);
-
-  void setEndBefore(Node refNode);
-
-  void setStart(Node refNode, int offset);
-
-  void setStartAfter(Node refNode);
-
-  void setStartBefore(Node refNode);
-
-  void surroundContents(Node newParent);
-
-  String toString();
-}