LanguageState should be owned by TranslateManager

components/translate/content/browser/content_translate_driver.h

Index: components/translate/content/browser/content_translate_driver.h
diff --git a/components/translate/content/browser/content_translate_driver.h b/components/translate/content/browser/content_translate_driver.h
index 4d545b9649b20910afec505b7f769bc1b7fdd577..90b5a73f5901d90a78afe68ce7af93dfcb3e394c 100644
--- a/components/translate/content/browser/content_translate_driver.h
+++ b/components/translate/content/browser/content_translate_driver.h
@@ -38,14 +38,10 @@ class ContentTranslateDriver : public TranslateDriver {
   // Sets the Observer. Calling this method is optional.
   void set_observer(Observer* observer) { observer_ = observer; }
 
-  // Must be called on navigations.
-  void DidNavigate(const content::LoadCommittedDetails& details);
-
   // TranslateDriver methods.
   virtual void OnIsPageTranslatedChanged() OVERRIDE;
   virtual void OnTranslateEnabledChanged() OVERRIDE;
   virtual bool IsLinkNavigation() OVERRIDE;
-  virtual LanguageState& GetLanguageState() OVERRIDE;
   virtual void TranslatePage(const std::string& translate_script,
                              const std::string& source_lang,
                              const std::string& target_lang) OVERRIDE;
@@ -62,7 +58,6 @@ class ContentTranslateDriver : public TranslateDriver {
   // The navigation controller of the tab we are associated with.
   content::NavigationController* navigation_controller_;
 
-  LanguageState language_state_;
   Observer* observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentTranslateDriver);