Revert 50913...

chrome/browser/translate/translate_infobar_delegate2.h

Index: chrome/browser/translate/translate_infobar_delegate2.h
===================================================================
--- chrome/browser/translate/translate_infobar_delegate2.h	(revision 50913)
+++ chrome/browser/translate/translate_infobar_delegate2.h	(working copy)
@@ -49,10 +49,10 @@
   int GetLanguageCount() const;
 
   // Returns the ISO code for the language at |index|.
-  std::string GetLanguageCodeAt(int index) const;
+  const std::string& GetLanguageCodeAt(int index) const;
 
   // Returns the displayable name for the language at |index|.
-  string16 GetLanguageDisplayableNameAt(int index) const;
+  const string16& GetLanguageDisplayableNameAt(int index) const;
 
   TabContents* tab_contents() const { return tab_contents_; }
 
@@ -62,8 +62,8 @@
   int target_language_index() const { return target_language_index_; }
 
   // Convenience methods.
-  std::string GetOriginalLanguageCode() const;
-  std::string GetTargetLanguageCode() const;
+  const std::string& GetOriginalLanguageCode() const;
+  const std::string& GetTargetLanguageCode() const;
 
   // Called by the InfoBar to notify that the original/target language has
   // changed and is now the language at |language_index|.
@@ -89,8 +89,7 @@
 
   // InfoBarDelegate implementation:
   virtual InfoBar* CreateInfoBar();
-  virtual void InfoBarDismissed();
-  virtual void InfoBarClosed();
+  void InfoBarDismissed();
   virtual SkBitmap* GetIcon() const;
   virtual InfoBarDelegate::Type GetInfoBarType();
   virtual TranslateInfoBarDelegate2* AsTranslateInfoBarDelegate2() {