Check alpha-sorting of includes during presubmit.

src/platform-qnx.cc

 // Copyright 2013 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 QNX goes here. For the POSIX-compatible
 // parts the implementation is in platform-posix.cc.
 
+#include <backtrace.h>
 #include <pthread.h>
 #include <semaphore.h>
 #include <signal.h>
+#include <stdlib.h>
+#include <sys/resource.h>
 #include <sys/time.h>
-#include <sys/resource.h>
 #include <sys/types.h>
-#include <stdlib.h>
 #include <ucontext.h>
-#include <backtrace.h>
 
 // QNX requires memory pages to be marked as executable.
 // Otherwise, the OS raises an exception when executing code in that page.
+#include <errno.h>
+#include <fcntl.h>      // open
+#include <stdarg.h>
+#include <strings.h>    // index
+#include <sys/mman.h>   // mmap & munmap
+#include <sys/procfs.h>
+#include <sys/stat.h>   // open
 #include <sys/types.h>  // mmap & munmap
-#include <sys/mman.h>   // mmap & munmap
-#include <sys/stat.h>   // open
-#include <fcntl.h>      // open
 #include <unistd.h>     // sysconf
-#include <strings.h>    // index
-#include <errno.h>
-#include <stdarg.h>
-#include <sys/procfs.h>
 
 #undef MAP_TYPE
 
 #include "src/v8.h"
 
 #include "src/platform.h"
 
 
 namespace v8 {
 namespace internal {
@@ skipping 325 matching lines @@
 bool VirtualMemory::ReleaseRegion(void* base, size_t size) {
   return munmap(base, size) == 0;
 }
 
 
 bool VirtualMemory::HasLazyCommits() {
   return false;
 }
 
 } }  // namespace v8::internal