Convert some tools to use FilePaths for file names.

chrome/tools/convert_dict/aff_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_AFF_READER_H__
 #define CHROME_TOOLS_CONVERT_DICT_AFF_READER_H__
 
 #include <map>
 #include <stdio.h>
 #include <string>
 #include <vector>
 
+class FilePath;
+
 namespace convert_dict {
 
 class AffReader {
  public:
-  explicit AffReader(const std::string& filename);
+  explicit AffReader(const FilePath& path);
   ~AffReader();
 
   bool Read();
 
   // Returns whether this file uses indexed affixes, or, on false, whether the
   // rule string will be specified literally in the .dic file. This must be
   // called after Read().
   bool has_indexed_affixes() const { return has_indexed_affixes_; }
 
   // Returns a string representing the encoding of the dictionary. This will
@@ skipping 69 matching lines @@
   // is the replacment.
   std::vector< std::pair<std::string, std::string> > replacements_;
 
   // All other commands.
   std::vector<std::string> other_commands_;
 };
 
 }  // namespace convert_dict
 
 #endif  // CHROME_TOOLS_CONVERT_DICT_AFF_READER_H__