Make sure that the UI window created by base::MessagePumpForUI is destoyed on the same thread (Wind…

base/message_loop/message_pump_libevent.cc

Index: base/message_loop/message_pump_libevent.cc
diff --git a/base/message_loop/message_pump_libevent.cc b/base/message_loop/message_pump_libevent.cc
index 8de0db23e2837df8a92cb4e2020454a635198047..2a4cabe41f7b8e8612ffe5b83b19feac4168c229 100644
--- a/base/message_loop/message_pump_libevent.cc
+++ b/base/message_loop/message_pump_libevent.cc
@@ -302,6 +302,9 @@ void MessagePumpLibevent::ScheduleDelayedWork(
   delayed_work_time_ = delayed_work_time;
 }
 
+void MessagePumpLibevent::Shutdown() {
+}
+
 void MessagePumpLibevent::WillProcessIOEvent() {
   FOR_EACH_OBSERVER(IOObserver, io_observers_, WillProcessIOEvent());
 }