Port the spell checker to posix.

chrome/browser/spellchecker.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_BROWSER_SPELLCHECKER_H__
 #define CHROME_BROWSER_SPELLCHECKER_H__
 
 #include <vector>
 
 #include "base/string_util.h"
@@ skipping 89 matching lines @@
   void AddCustomWordsToHunspell();
 
   void set_file_is_downloading(bool value);
 
   // Memory maps the given .bdic file. On success, it will return true and will
   // place the data and lenght into the given out parameters.
   bool MapBdictFile(const unsigned char** data, size_t* length);
 
   // Returns whether or not the given word is a contraction of valid words
   // (e.g. "word:word").
-  bool IsValidContraction(const Language& word);
+  bool IsValidContraction(const string16& word);
 
   // Return the file name of the dictionary, including the path and the version
   // numbers.
   std::wstring GetVersionedFileName(const Language& language,
                                     const std::wstring& dict_dir);
 
   static Language GetCorrespondingSpellCheckLanguage(const Language& language);
   
   // Path to the spellchecker file.
   std::wstring bdict_file_name_;
@@ skipping 47 matching lines @@
   // Used for generating callbacks to spellchecker, since spellchecker is a
   // non-reference counted object. The callback is generated by generating tasks
   // using NewRunableMethod on these objects.
   ScopedRunnableMethodFactory<SpellChecker> dic_download_state_changer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SpellChecker);
 };
 
 #endif  // #ifndef CHROME_BROWSER_SPELLCHECKER_H__