Move file_util::Delete to the 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 fa51f4f8ce770f8c3b933d9627c7351ea0481461..91658d16db961d996e26d8a62b1f64cf4f5bcf1b 100644
--- a/chrome/tools/convert_dict/convert_dict_unittest.cc
+++ b/chrome/tools/convert_dict/convert_dict_unittest.cc
@@ -130,8 +130,8 @@ void RunDictionaryTest(const char* codepage,
   // Deletes the temporary files.
   // We need to delete them after the above AffReader and DicReader are deleted
   // since they close the input files in their destructors.
-  file_util::Delete(aff_file, false);
-  file_util::Delete(dic_file, false);
+  base::Delete(aff_file, false);
+  base::Delete(dic_file, false);
 }
 
 }  // namespace