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

chrome/browser/app_controller_mac.mm

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/app_controller_mac.h"
 
 #include <stddef.h>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 926 matching lines @@
   // and is getting here because the foreground window is not a browser window.
   if ([sender respondsToSelector:@selector(window)]) {
     id delegate = [[sender window] windowController];
     if ([delegate respondsToSelector:@selector(commandDispatch:)]) {
       [delegate commandDispatch:sender];
       return;
     }
   }
 
   // Ignore commands during session restore's browser creation.  It uses a
-  // nested message loop and commands dispatched during this operation cause
+  // nested run loop and commands dispatched during this operation cause
   // havoc.
   if (SessionRestore::IsRestoring(lastProfile) &&
       base::RunLoop::IsNestedOnCurrentThread()) {
     return;
   }
 
   NSInteger tag = [sender tag];
 
   // If there are no browser windows, and we are trying to open a browser
   // for a locked profile or the system profile, we have to show the User
@@ skipping 652 matching lines @@
 
 //---------------------------------------------------------------------------
 
 namespace app_controller_mac {
 
 bool IsOpeningNewWindow() {
   return g_is_opening_new_window;
 }
 
 }  // namespace app_controller_mac