Move temp file functions to base namespace.

chrome/installer/setup/setup_main.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/installer/setup/setup_main.h"
 
 #include <windows.h>
 #include <msi.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 673 matching lines @@
     base::FilePath* unpack_path) {
   DCHECK(temp_path && unpack_path);
 
   if (!temp_path->Initialize(installer_state.target_path().DirName(),
                              installer::kInstallTempDir)) {
     PLOG(ERROR) << "Could not create temporary path.";
     return false;
   }
   VLOG(1) << "Created path " << temp_path->path().value();
 
-  if (!file_util::CreateTemporaryDirInDir(temp_path->path(),
-                                          installer::kInstallSourceDir,
-                                          unpack_path)) {
+  if (!base::CreateTemporaryDirInDir(temp_path->path(),
+                                     installer::kInstallSourceDir,
+                                     unpack_path)) {
     PLOG(ERROR) << "Could not create temporary path for unpacked archive.";
     return false;
   }
 
   return true;
 }
 
 installer::InstallStatus InstallProducts(
     const InstallationState& original_state,
     const CommandLine& cmd_line,
@@ skipping 1152 matching lines @@
     // Call the newly updated setup.exe with kUncompressedArchive and
     // kMigrateChromeFrame to perform the migration.
     LaunchChromeFrameMigrationProcess(*chrome_frame_state, cmd_line,
                                       installer_directory, system_install);
   }
 
   VLOG(1) << "Installation complete, returning: " << return_code;
 
   return return_code;
 }