root/chrome/browser/ui/cocoa/download/

1. background_theme.h
2. download_item_button.h
3. download_item_cell.h
4. download_item_controller.h
5. download_item_mac.h
6. download_shelf_context_menu_controller.h
7. download_shelf_controller.h
8. download_shelf_mac.h
9. download_shelf_view.h
10. download_show_all_button.h
11. download_show_all_cell.h
12. download_util_mac.h