Subject .mm files to the header sorting presubmit

base/sys_info_ios.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 "base/sys_info.h"
 
-#import <UIKit/UIKit.h>
 #include <mach/mach.h>
 #include <sys/sysctl.h>
 #include <sys/types.h>
+#import <UIKit/UIKit.h>
 
 #include "base/logging.h"
 #include "base/mac/scoped_mach_port.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/strings/sys_string_conversions.h"
 
 namespace base {
 
 // static
 std::string SysInfo::OperatingSystemName() {
@@ skipping 77 matching lines @@
 // static
 std::string SysInfo::CPUModelName() {
   char name[256];
   size_t len = arraysize(name);
   if (sysctlbyname("machdep.cpu.brand_string", &name, &len, NULL, 0) == 0)
     return name;
   return std::string();
 }
 
 }  // namespace base