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

ios/web/web_state/web_state_impl.mm

 // Copyright 2013 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.
 
 #include "ios/web/web_state/web_state_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/strings/sys_string_conversions.h"
@@ skipping 260 matching lines @@
   CHECK(web::GetWebClient()->IsAppSpecificURL(url));
   [web_controller_ loadHTML:base::SysUTF16ToNSString(html)
           forAppSpecificURL:url];
 }
 
 const base::string16& WebStateImpl::GetTitle() const {
   // TODO(stuartmorgan): Implement the NavigationManager logic necessary to
   // match the WebContents implementation of this method.
   DCHECK(Configured());
   web::NavigationItem* item = navigation_manager_.GetLastCommittedItem();
-  if (item) {
-    return item->GetTitleForDisplay(
-        web::GetWebClient()->GetAcceptLangs(GetBrowserState()));
-  }
-  return empty_string16_;
+  return item ? item->GetTitleForDisplay() : empty_string16_;
 }
 
 void WebStateImpl::ShowTransientContentView(CRWContentView* content_view) {
   DCHECK(Configured());
   DCHECK(content_view);
   DCHECK(content_view.scrollView);
   [web_controller_ showTransientContentView:content_view];
 }
 
 bool WebStateImpl::IsShowingWebInterstitial() const {
@@ skipping 274 matching lines @@
     const LoadCommittedDetails& load_details) {
   FOR_EACH_OBSERVER(WebStateObserver, observers_,
                     NavigationItemCommitted(load_details));
 }
 
 WebState* WebStateImpl::GetWebState() {
   return this;
 }
 
 }  // namespace web