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

third_party/liblouis/nacl_wrapper/liblouis_wrapper.h

 // Copyright 2013 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
 // use this file except in compliance with the License. You may obtain a copy of
 // the License at
 //
 // http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@@ skipping 22 matching lines @@
 class LibLouisWrapper {
  public:
   LibLouisWrapper();
   ~LibLouisWrapper();
 
   // Returns one of the paths where tables may be searched for.
   const char* tables_dir() const;
 
   // 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:
   DISALLOW_COPY_AND_ASSIGN(LibLouisWrapper);
 };
 
 }  // namespace liblouis_nacl
 
 #endif  // LIBLOUIS_NACL_LIBLOUIS_WRAPPER_H_