Enables the user to select multiple languages for spellchecking (UI)

chrome/browser/spellchecker/spellcheck_service.h

Index: chrome/browser/spellchecker/spellcheck_service.h
diff --git a/chrome/browser/spellchecker/spellcheck_service.h b/chrome/browser/spellchecker/spellcheck_service.h
index a0b22f8bb40844896c7df633aa1ac82ff8fb950e..989b2554565bfef29158d227dc315230d04e4d21 100644
--- a/chrome/browser/spellchecker/spellcheck_service.h
+++ b/chrome/browser/spellchecker/spellcheck_service.h
@@ -60,14 +60,14 @@ class SpellcheckService : public KeyedService,
   // returns the index of the current spell check language in the vector.
   // TODO(port): this should take a vector of base::string16, but the
   // implementation has some dependencies in l10n util that need porting first.
-  static int GetSpellCheckLanguages(content::BrowserContext* context,
-                                    std::vector<std::string>* languages);
+  static std::set<int> GetSpellCheckLanguages(
+      content::BrowserContext* context,
+      std::vector<std::string>* languages);
 
   // Computes a vector of strings which are to be displayed in the context
   // menu from |accept_languages| and |dictionary_language|.
   static void GetSpellCheckLanguagesFromAcceptLanguages(
       const std::vector<std::string>& accept_languages,
-      const std::string& dictionary_language,
       std::vector<std::string>* languages);
 
   // Signals the event attached by AttachTestEvent() to report the specified
@@ -127,6 +127,10 @@ class SpellcheckService : public KeyedService,
  private:
   FRIEND_TEST_ALL_PREFIXES(SpellcheckServiceBrowserTest, DeleteCorruptedBDICT);
 
+  static std::vector<std::string> GetAcceptLanguages(PrefService* prefs);
+  static std::vector<std::string> GetSpellCheckDictionaryLanguages(
+      PrefService* prefs);
+
   // Attaches an event so browser tests can listen the status events.
   static void AttachStatusEvent(base::WaitableEvent* status_event);