Make undefined Unicode characters show up in a nicer way in braille.

third_party/liblouis/nacl_wrapper/liblouis_wrapper.h

Index: third_party/liblouis/nacl_wrapper/liblouis_wrapper.h
diff --git a/third_party/liblouis/nacl_wrapper/liblouis_wrapper.h b/third_party/liblouis/nacl_wrapper/liblouis_wrapper.h
index dac2b4ae2054d01a410c9077e068342b7be7580b..46c48163ae788ca69d32bd4c5d7da384d4435854 100644
--- a/third_party/liblouis/nacl_wrapper/liblouis_wrapper.h
+++ b/third_party/liblouis/nacl_wrapper/liblouis_wrapper.h
@@ -40,13 +40,13 @@ class LibLouisWrapper {
 
   // Loads, checks, and compiles the requested table.
   // Returns true on success.
-  bool CheckTable(const std::string& table_name);
+  bool CheckTable(const std::string& table_names);
 
   // Translates the given text and cursor position into braille.
   bool Translate(const TranslationParams& params, TranslationResult* out);
 
   // Translates the given braille cells into text.
-  bool BackTranslate(const std::string& table_name,
+  bool BackTranslate(const std::string& table_names,
       const std::vector<unsigned char>& cells, std::string* out);
 
  private: