Translate: display alpha language name with (alpha) suffix

chrome/browser/translate/translate_manager.h

Index: chrome/browser/translate/translate_manager.h
diff --git a/chrome/browser/translate/translate_manager.h b/chrome/browser/translate/translate_manager.h
index 9290c3a87d198a32fe532a7cbd02950c459226d1..74187cba2d23d099398769420a32c9285ced8162 100644
--- a/chrome/browser/translate/translate_manager.h
+++ b/chrome/browser/translate/translate_manager.h
@@ -115,6 +115,10 @@ class TranslateManager : public content::NotificationObserver,
   // Returns true if |language| is supported by the translation server.
   static bool IsSupportedLanguage(const std::string& language);
 
+  // Returns true if |language| is supported by the translation server as a
+  // alpha language.
+  static bool IsAlphaLanguage(const std::string& language);
+
   // The observer class for TranslateManager.
   class Observer {
    public: