Revert 212948 "Made MessagePump a non-thread safe class."

trunk/src/base/message_loop/message_pump_glib.cc

Index: trunk/src/base/message_loop/message_pump_glib.cc
===================================================================
--- trunk/src/base/message_loop/message_pump_glib.cc	(revision 212951)
+++ trunk/src/base/message_loop/message_pump_glib.cc	(working copy)
@@ -160,13 +160,6 @@
   g_source_attach(work_source_, context_);
 }
 
-MessagePumpGlib::~MessagePumpGlib() {
-  g_source_destroy(work_source_);
-  g_source_unref(work_source_);
-  close(wakeup_pipe_read_);
-  close(wakeup_pipe_write_);
-}
-
 void MessagePumpGlib::RunWithDispatcher(Delegate* delegate,
                                         MessagePumpDispatcher* dispatcher) {
 #ifndef NDEBUG
@@ -327,6 +320,13 @@
   ScheduleWork();
 }
 
+MessagePumpGlib::~MessagePumpGlib() {
+  g_source_destroy(work_source_);
+  g_source_unref(work_source_);
+  close(wakeup_pipe_read_);
+  close(wakeup_pipe_write_);
+}
+
 MessagePumpDispatcher* MessagePumpGlib::GetDispatcher() {
   return state_ ? state_->dispatcher : NULL;
 }