Move temp file functions 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.
 
 #if defined _MSC_VER && _MSC_VER == 1800
 // TODO(scottmg): Internal errors on VS2013 RC in LTCG. This should be removed
 // after RTM. http://crbug.com/288948
 #pragma optimize("", off)
 #endif
 
@@ skipping 40 matching lines @@
 }  // namespace
 
 // static
 bool ImportantFileWriter::WriteFileAtomically(const FilePath& path,
                                               const std::string& data) {
   // Write the data to a temp file then rename to avoid data loss if we crash
   // while writing the file. Ensure that the temp file is on the same volume
   // as target file, so it can be moved in one step, and that the temp file
   // is securely created.
   FilePath tmp_file_path;
-  if (!file_util::CreateTemporaryFileInDir(path.DirName(), &tmp_file_path)) {
+  if (!base::CreateTemporaryFileInDir(path.DirName(), &tmp_file_path)) {
     LogFailure(path, FAILED_CREATING, "could not create temporary file");
     return false;
   }
 
   int flags = PLATFORM_FILE_OPEN | PLATFORM_FILE_WRITE;
   PlatformFile tmp_file =
       CreatePlatformFile(tmp_file_path, flags, NULL, NULL);
   if (tmp_file == kInvalidPlatformFileValue) {
     LogFailure(path, FAILED_OPENING, "could not open temporary file");
     return false;
@@ skipping 92 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