Check alpha-sorting of includes during presubmit.

src/platform-macos.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Platform-specific code for MacOS goes here. For the POSIX-compatible
 // parts, the implementation is in platform-posix.cc.
 
 #include <dlfcn.h>
-#include <unistd.h>
-#include <sys/mman.h>
 #include <mach/mach_init.h>
 #include <mach-o/dyld.h>
 #include <mach-o/getsect.h>
+#include <sys/mman.h>
+#include <unistd.h>
 
 #include <AvailabilityMacros.h>
 
-#include <pthread.h>
-#include <semaphore.h>
-#include <signal.h>
+#include <errno.h>
 #include <libkern/OSAtomic.h>
 #include <mach/mach.h>
 #include <mach/semaphore.h>
 #include <mach/task.h>
 #include <mach/vm_statistics.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/types.h>
-#include <sys/sysctl.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <signal.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
-#include <errno.h>
+#include <sys/resource.h>
+#include <sys/sysctl.h>
+#include <sys/time.h>
+#include <sys/types.h>
 
 #undef MAP_TYPE
 
 #include "src/v8.h"
 
 #include "src/platform.h"
 
 
 namespace v8 {
 namespace internal {
@@ skipping 257 matching lines @@
 bool VirtualMemory::ReleaseRegion(void* address, size_t size) {
   return munmap(address, size) == 0;
 }
 
 
 bool VirtualMemory::HasLazyCommits() {
   return false;
 }
 
 } }  // namespace v8::internal