Convert some tools to use FilePaths for file names.

chrome/tools/convert_dict/dic_reader.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef CHROME_TOOLS_CONVERT_DICT_DIC_READER_H__
 #define CHROME_TOOLS_CONVERT_DICT_DIC_READER_H__
 
 #include <stdio.h>
 #include <map>
 #include <string>
 #include <vector>
 
+class FilePath;
+
 namespace convert_dict {
 
 class AffReader;
 
 // Reads Hunspell .dic files.
 class DicReader {
  public:
   // Associated with each word is a list of affix group IDs. This will typically
   // be only one long, but may be more if there are multiple groups of
   // independent affix rules for a base word.
   typedef std::pair<std::string, std::vector<int> > WordEntry;
   typedef std::vector<WordEntry> WordList;
 
-  explicit DicReader(const std::string& filename);
+  explicit DicReader(const FilePath& path);
   ~DicReader();
 
   // Non-numeric affixes will be added to the given AffReader and converted into
   // indices.
   bool Read(AffReader* aff_reader);
 
   // Returns the words read by Read(). These will be in order.
   const WordList& words() const { return words_; }
 
  private:
   FILE* file_;
   FILE* additional_words_file_;
 
   // Contains all words and their corresponding affix index.
   WordList words_;
 };
 
 }  // namespace convert_dict
 
 #endif  // CHROME_TOOLS_CONVERT_DICT_DIC_READER_H__