Revert 35735 - Relanding the language detection code....

chrome/browser/tab_contents/navigation_entry.h

Index: chrome/browser/tab_contents/navigation_entry.h
===================================================================
--- chrome/browser/tab_contents/navigation_entry.h	(revision 35751)
+++ chrome/browser/tab_contents/navigation_entry.h	(working copy)
@@ -389,15 +389,6 @@
     return restore_type_;
   }
 
-  // The ISO 639-1 language code (ex: en, fr, zh...) for the page.
-  // Can be empty if the language was not detected yet or is unknown.
-  void set_language(const std::string& language) {
-    language_ = language;
-  }
-  std::string language() const {
-    return language_;
-  }
-
  private:
   // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
   // Session/Tab restore save portions of this class so that it can be recreated
@@ -422,7 +413,6 @@
   GURL user_typed_url_;
   bool has_post_data_;
   RestoreType restore_type_;
-  std::string language_;  // ISO 639-1 language code.
 
   // This is a cached version of the result of GetTitleForDisplay. It prevents
   // us from having to do URL formatting on the URL evey time the title is