Build fixes for fnl/musl

base/files/file_util_posix.cc

 // 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/files/file_util.h"
 
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <libgen.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/errno.h>
 #include <sys/mman.h>
 #include <sys/param.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 
 #if defined(OS_MACOSX)
 #include <AvailabilityMacros.h>
@@ skipping 900 matching lines @@
     return false;
 
   DeleteFile(from_path, true);
   return true;
 }
 
 }  // namespace internal
 
 #endif  // !defined(OS_NACL_NONSFI)
 }  // namespace base