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 de4aa925e5894ba5d62cfd7d1cf22d1aeb76d6ff..1f5cd2f423b1f08a13beca95d7b4018628e5706c 100644
--- a/chrome/browser/translate/translate_manager.h
+++ b/chrome/browser/translate/translate_manager.h
@@ -114,6 +114,10 @@ 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: