Gtk languages options page part 1: accept-languages configuration.

app/l10n_util.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.
 
 // This file contains utility functions for dealing with localized
 // content.
 
 #ifndef APP_L10N_UTIL_H_
 #define APP_L10N_UTIL_H_
 
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 // In place sorting of strings using collation rules for |locale|.
 // TODO(port): this should take string16.
 void SortStrings(const std::string& locale,
                  std::vector<std::wstring>* strings);
 
 // Returns a vector of available locale codes. E.g., a vector containing
 // en-US, es, fr, fi, pt-PT, pt-BR, etc.
 const std::vector<std::string>& GetAvailableLocales();
 
+// Returns a vector of locale codes usable for accept-languages.
+void GetAcceptLanguagesForLocale(const std::string& display_locale,
+                                 std::vector<std::string>* locale_codes);
+
 // A simple wrapper class for the bidirectional iterator of ICU.
 // This class uses the bidirectional iterator of ICU to split a line of
 // bidirectional texts into visual runs in its display order.
 class BiDiLineIterator {
  public:
   BiDiLineIterator() : bidi_(NULL) { }
   ~BiDiLineIterator();
 
   // Initializes the bidirectional iterator with the specified text.  Returns
   // whether initialization succeeded.
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  private:
   UBiDi* bidi_;
 
   DISALLOW_COPY_AND_ASSIGN(BiDiLineIterator);
 };
 
 }
 
 #endif  // APP_L10N_UTIL_H_