Move undo files into //components/undo

chrome/browser/undo/bookmark_undo_utils.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_UNDO_BOOKMARK_UNDO_UTILS_H_
-#define CHROME_BROWSER_UNDO_BOOKMARK_UNDO_UTILS_H_
-
-#include "base/basictypes.h"
-
-class BookmarkUndoService;
-class UndoManager;
-
-// ScopedSuspendBookmarkUndo --------------------------------------------------
-
-// Scopes the suspension of the undo tracking for non-user initiated changes
-// such as those occuring during account synchronization.
-class ScopedSuspendBookmarkUndo {
- public:
-  explicit ScopedSuspendBookmarkUndo(
-      BookmarkUndoService* bookmark_undo_service);
-  ~ScopedSuspendBookmarkUndo();
-
- private:
-  UndoManager* undo_manager_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedSuspendBookmarkUndo);
-};
-
-#endif  // CHROME_BROWSER_UNDO_BOOKMARK_UNDO_UTILS_H_