Move DeleteAfterReboot and Move to base namespace

base/files/important_file_writer.cc

 // Copyright (c) 2011 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/important_file_writer.h"
 
 #include <stdio.h>
 
 #include <string>
 
@@ skipping 66 matching lines @@
     return false;
   }
 
   if (bytes_written < static_cast<int>(data.length())) {
     LogFailure(path, FAILED_WRITING, "error writing, bytes_written=" +
                IntToString(bytes_written));
     base::Delete(tmp_file_path, false);
     return false;
   }
 
-  if (!file_util::ReplaceFile(tmp_file_path, path)) {
+  if (!base::ReplaceFile(tmp_file_path, path, NULL)) {
     LogFailure(path, FAILED_RENAMING, "could not rename temporary file");
     base::Delete(tmp_file_path, false);
     return false;
   }
 
   return true;
 }
 
 ImportantFileWriter::ImportantFileWriter(
     const FilePath& path, base::SequencedTaskRunner* task_runner)
@@ skipping 60 matching lines @@
   if (serializer_->SerializeData(&data)) {
     WriteNow(data);
   } else {
     DLOG(WARNING) << "failed to serialize data to be saved in "
                   << path_.value().c_str();
   }
   serializer_ = NULL;
 }
 
 }  // namespace base