HandlerToKey      464 base/message_loop/message_pump_win.cc   ULONG_PTR key = HandlerToKey(handler, true);
HandlerToKey      474 base/message_loop/message_pump_win.cc   ULONG_PTR key = HandlerToKey(handler, false);
HandlerToKey      340 base/message_loop/message_pump_win.h   static ULONG_PTR HandlerToKey(IOHandler* handler, bool has_valid_io_context);