Ok, so I suggest "gtk-clear", which is a broomstick icon. Attaching the patch. I will also suggest this upstream.
** Attachment added: "Patch" http://librarian.launchpad.net/2265533/empty_trash_with_menu_icon.patch -- "Empty Trash" should be better highlighted https://launchpad.net/bugs/22748 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
