Move undo files into //components/undo

chrome/browser/ui/bookmarks/bookmark_drag_drop.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/ui/bookmarks/bookmark_drag_drop.h"
 
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/undo/bookmark_undo_service.h"
 #include "chrome/browser/undo/bookmark_undo_service_factory.h"
 #include "components/bookmarks/browser/bookmark_client.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/bookmark_node_data.h"
 #include "components/bookmarks/browser/bookmark_utils.h"
 #include "components/bookmarks/browser/scoped_group_bookmark_actions.h"
+#include "components/undo/bookmark_undo_service.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
 
 using bookmarks::BookmarkModel;
 using bookmarks::BookmarkNode;
 using bookmarks::BookmarkNodeData;
 
 namespace chrome {
 
 int DropBookmarks(Profile* profile,
                   const BookmarkNodeData& data,
@@ skipping 23 matching lines @@
       return copy ? ui::DragDropTypes::DRAG_COPY : ui::DragDropTypes::DRAG_MOVE;
     }
     return ui::DragDropTypes::DRAG_NONE;
   }
   // Dropping a folder from different profile. Always accept.
   bookmarks::CloneBookmarkNode(model, data.elements, parent_node, index, true);
   return ui::DragDropTypes::DRAG_COPY;
 }
 
 }  // namespace chrome