Revert of base: Remove use of MessageLoopProxy

base/synchronization/condition_variable_unittest.cc

Index: base/synchronization/condition_variable_unittest.cc
diff --git a/base/synchronization/condition_variable_unittest.cc b/base/synchronization/condition_variable_unittest.cc
index e63a723d0097813cdee76c86be6b4e797dffd6f4..5d7a0ab8b601187629720b06464086a8485a69d7 100644
--- a/base/synchronization/condition_variable_unittest.cc
+++ b/base/synchronization/condition_variable_unittest.cc
@@ -9,10 +9,8 @@
 #include <vector>
 
 #include "base/bind.h"
-#include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/single_thread_task_runner.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/spin_wait.h"
@@ -222,7 +220,7 @@
 
   Thread thread("Helper");
   thread.Start();
-  thread.task_runner()->PostTask(FROM_HERE, base::Bind(&BackInTime, &lock));
+  thread.message_loop()->PostTask(FROM_HERE, base::Bind(&BackInTime, &lock));
 
   TimeTicks start = TimeTicks::Now();
   const TimeDelta kWaitTime = TimeDelta::FromMilliseconds(300);