Deleted OS_WIN and all Windows specific files from base.

base/files/file_util.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"
 
-#if defined(OS_WIN)
-#include <io.h>
-#endif
 #include <stdio.h>
 
 #include <fstream>
 #include <limits>
 
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
@@ skipping 171 matching lines @@
     return false;
   *file_size = info.size;
   return true;
 }
 
 bool TouchFile(const FilePath& path,
                const Time& last_accessed,
                const Time& last_modified) {
   int flags = File::FLAG_OPEN | File::FLAG_WRITE_ATTRIBUTES;
 
-#if defined(OS_WIN)
-  // On Windows, FILE_FLAG_BACKUP_SEMANTICS is needed to open a directory.
-  if (DirectoryExists(path))
-    flags |= File::FLAG_BACKUP_SEMANTICS;
-#endif  // OS_WIN
-
   File file(path, flags);
   if (!file.IsValid())
     return false;
 
   return file.SetTimes(last_accessed, last_modified);
 }
 #endif  // !defined(OS_NACL_NONSFI)
 
 bool CloseFile(FILE* file) {
   if (file == NULL)
     return true;
   return fclose(file) == 0;
 }
 
 #if !defined(OS_NACL_NONSFI)
 bool TruncateFile(FILE* file) {
   if (file == NULL)
     return false;
   long current_offset = ftell(file);
   if (current_offset == -1)
     return false;
-#if defined(OS_WIN)
-  int fd = _fileno(file);
-  if (_chsize(fd, current_offset) != 0)
-    return false;
-#else
   int fd = fileno(file);
   if (ftruncate(fd, current_offset) != 0)
     return false;
-#endif
   return true;
 }
 
 int GetUniquePathNumber(const FilePath& path,
                         const FilePath::StringType& suffix) {
   bool have_suffix = !suffix.empty();
   if (!PathExists(path) &&
       (!have_suffix || !PathExists(FilePath(path.value() + suffix)))) {
     return 0;
   }
 
   FilePath new_path;
   for (int count = 1; count <= kMaxUniqueFiles; ++count) {
     new_path = path.InsertBeforeExtensionASCII(StringPrintf(" (%d)", count));
     if (!PathExists(new_path) &&
         (!have_suffix || !PathExists(FilePath(new_path.value() + suffix)))) {
       return count;
     }
   }
 
   return -1;
 }
 #endif  // !defined(OS_NACL_NONSFI)
 
 }  // namespace base