Drop |languages| from {Format,Elide}Url* and IDNToUnicode

ios/web/navigation/navigation_item_impl.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IOS_WEB_NAVIGATION_NAVIGATION_ITEM_IMPL_H_
 #define IOS_WEB_NAVIGATION_NAVIGATION_ITEM_IMPL_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 33 matching lines @@
   void SetURL(const GURL& url) override;
   const GURL& GetURL() const override;
   void SetReferrer(const web::Referrer& referrer) override;
   const web::Referrer& GetReferrer() const override;
   void SetVirtualURL(const GURL& url) override;
   const GURL& GetVirtualURL() const override;
   void SetTitle(const base::string16& title) override;
   const base::string16& GetTitle() const override;
   void SetPageDisplayState(const PageDisplayState& display_state) override;
   const PageDisplayState& GetPageDisplayState() const override;
-  const base::string16& GetTitleForDisplay(
-      const std::string& languages) const override;
+  const base::string16& GetTitleForDisplay() const override;
   void SetTransitionType(ui::PageTransition transition_type) override;
   ui::PageTransition GetTransitionType() const override;
   const FaviconStatus& GetFavicon() const override;
   FaviconStatus& GetFavicon() override;
   const SSLStatus& GetSSL() const override;
   SSLStatus& GetSSL() override;
   void SetTimestamp(base::Time timestamp) override;
   base::Time GetTimestamp() const override;
   void SetUnsafe(bool is_unsafe) override;
   bool IsUnsafe() const override;
@@ skipping 74 matching lines @@
 
   // Weak pointer to the facade delegate.
   scoped_ptr<NavigationItemFacadeDelegate> facade_delegate_;
 
   // Copy and assignment is explicitly allowed for this class.
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_NAVIGATION_NAVIGATION_ITEM_IMPL_H_