DRAG_AND_DROP     648 ash/shelf/shelf_view.cc                          ShelfButtonHost::DRAG_AND_DROP,
DRAG_AND_DROP     671 ash/shelf/shelf_view.cc                          ShelfButtonHost::DRAG_AND_DROP,
DRAG_AND_DROP     683 ash/shelf/shelf_view.cc       drag_and_drop_view, ShelfButtonHost::DRAG_AND_DROP, cancel);