Replace "nested message loop" with "nested run loop" in comments.

chrome/browser/sync/test/integration/status_change_checker.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SYNC_TEST_INTEGRATION_STATUS_CHANGE_CHECKER_H_
 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_STATUS_CHANGE_CHECKER_H_
 
 #include <string>
 
 #include "base/time/time.h"
@@ skipping 27 matching lines @@
 
   // Returns true if the blocking wait was exited because of a timeout.
   bool TimedOut() const;
 
  protected:
   virtual ~StatusChangeChecker();
 
   // Timeout length when blocking.
   virtual base::TimeDelta GetTimeoutDuration();
 
-  // Helper function to start running the nested message loop.
+  // Helper function to start running the nested run loop.
   //
   // Will exit if IsExitConditionSatisfied() returns true when called from
   // CheckExitCondition(), if a timeout occurs, or if StopWaiting() is called.
   //
   // The timeout length is specified with GetTimeoutDuration().
   void StartBlockingWait();
 
   // Stop the nested running of the message loop started in StartBlockingWait().
   void StopWaiting();
 
   // Checks IsExitConditionSatisfied() and calls StopWaiting() if it returns
   // true.
   void CheckExitCondition();
 
   // Called when the blocking wait timeout is exceeded.
   void OnTimeout();
 
   bool timed_out_;
 };
 
 #endif  // CHROME_BROWSER_SYNC_TEST_INTEGRATION_STATUS_CHANGE_CHECKER_H_