Move temp file functions to base namespace.

chrome/browser/chromeos/file_manager/file_watcher_unittest.cc

 // Copyright 2013 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/browser/chromeos/file_manager/file_watcher.h"
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 120 matching lines @@
           &run_loop,
           CreateCopyResultCallback(&changed_path, &on_change_error)),
       CreateCopyResultCallback(&watcher_created));
   // Spin the message loop so the base::FilePathWatcher is created.
   base::RunLoop().RunUntilIdle();
   ASSERT_TRUE(watcher_created);
 
   // Create a temporary file in the temporary directory. The file watcher
   // should detect the change in the directory.
   base::FilePath temp_file_path;
-  ASSERT_TRUE(file_util::CreateTemporaryFileInDir(temp_dir.path(),
-                                                  &temp_file_path));
+  ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir.path(), &temp_file_path));
   // Wait until the directory change is notified.
   run_loop.Run();
   ASSERT_FALSE(on_change_error);
   ASSERT_EQ(temp_dir.path().value(), changed_path.value());
 
   // This is ugly, but FileWatcher should be deleted explicitly here, and
   // spin the message loop so the base::FilePathWatcher is deleted.
   // Otherwise, base::FilePathWatcher may detect a change when the temporary
   // directory is deleted, which may result in crash.
   file_watcher.reset();
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace
 }  // namespace file_manager.