Subject .mm files to the header sorting presubmit

testing/iossim/iossim.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.
 
+#include <asl.h>
 #import <Foundation/Foundation.h>
-#include <asl.h>
 #include <libgen.h>
 #include <stdarg.h>
 #include <stdio.h>
 
 // An executable (iossim) that runs an app in the iOS Simulator.
 // Run 'iossim -h' for usage information.
 //
 // For best results, the iOS Simulator application should not be running when
 // iossim is invoked.
 //
@@ skipping 1005 matching lines @@
              [error localizedDescription],
              [error domain], static_cast<long int>([error code]));
   }
 
   // Note that this code is only executed if the simulator fails to start
   // because once the main run loop is started, only the delegate calling
   // exit() will end the program.
   [pool drain];
   return kExitFailure;
 }