Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/utility/extensions/unpacker.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 "chrome/utility/extensions/unpacker.h"
 
 #include <set>
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 70 matching lines @@
       ++i;
     }
   }
 
   return false;
 }
 
 bool WritePickle(const IPC::Message& pickle, const base::FilePath& dest_path) {
   int size = base::checked_cast<int>(pickle.size());
   const char* data = static_cast<const char*>(pickle.data());
-  int bytes_written = file_util::WriteFile(dest_path, data, size);
+  int bytes_written = base::WriteFile(dest_path, data, size);
   return (bytes_written == size);
 }
 
 }  // namespace
 
 struct Unpacker::InternalData {
   DecodedImages decoded_images;
 };
 
 Unpacker::Unpacker(const base::FilePath& extension_path,
@@ skipping 218 matching lines @@
 
 void Unpacker::SetError(const std::string &error) {
   SetUTF16Error(base::UTF8ToUTF16(error));
 }
 
 void Unpacker::SetUTF16Error(const base::string16& error) {
   error_message_ = error;
 }
 
 }  // namespace extensions