Move temp file functions to base namespace.

chrome/tools/convert_dict/convert_dict_unittest.cc

Index: chrome/tools/convert_dict/convert_dict_unittest.cc
diff --git a/chrome/tools/convert_dict/convert_dict_unittest.cc b/chrome/tools/convert_dict/convert_dict_unittest.cc
index 77f760d3cd644c6bebf51affcbd616fbba0ceefc..4fee2fb2d60a3e2a13272b2e0d63ef6fc57241c4 100644
--- a/chrome/tools/convert_dict/convert_dict_unittest.cc
+++ b/chrome/tools/convert_dict/convert_dict_unittest.cc
@@ -80,11 +80,11 @@ void RunDictionaryTest(const char* codepage,
 
   // Create a temporary affix file and a dictionary file from the test data.
   base::FilePath aff_file;
-  file_util::CreateTemporaryFile(&aff_file);
+  base::CreateTemporaryFile(&aff_file);
   file_util::WriteFile(aff_file, aff_data.c_str(), aff_data.length());
 
   base::FilePath dic_file;
-  file_util::CreateTemporaryFile(&dic_file);
+  base::CreateTemporaryFile(&dic_file);
   file_util::WriteFile(dic_file, dic_data.c_str(), dic_data.length());
 
   {