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

ios/web/navigation/navigation_item_impl.mm

 // 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.
 
 #include "ios/web/navigation/navigation_item_impl.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 109 matching lines @@
 
 void NavigationItemImpl::SetPageDisplayState(
     const web::PageDisplayState& display_state) {
   page_display_state_ = display_state;
 }
 
 const PageDisplayState& NavigationItemImpl::GetPageDisplayState() const {
   return page_display_state_;
 }
 
-const base::string16& NavigationItemImpl::GetTitleForDisplay(
-    const std::string& languages) const {
+const base::string16& NavigationItemImpl::GetTitleForDisplay() const {
   // Most pages have real titles. Don't even bother caching anything if this is
   // the case.
   if (!title_.empty())
     return title_;
 
   // More complicated cases will use the URLs as the title. This result we will
   // cache since it's more complicated to compute.
   if (!cached_display_title_.empty())
     return cached_display_title_;
 
   // Use the virtual URL first if any, and fall back on using the real URL.
   base::string16 title;
   if (!virtual_url_.is_empty()) {
-    title = url_formatter::FormatUrl(virtual_url_, languages);
+    title = url_formatter::FormatUrl(virtual_url_);
   } else if (!url_.is_empty()) {
-    title = url_formatter::FormatUrl(url_, languages);
+    title = url_formatter::FormatUrl(url_);
   }
 
   // For file:// URLs use the filename as the title, not the full path.
   if (url_.SchemeIsFile()) {
     base::string16::size_type slashpos = title.rfind('/');
     if (slashpos != base::string16::npos)
       title = title.substr(slashpos + 1);
   }
 
   const size_t kMaxTitleChars = 4 * 1024;
@@ skipping 113 matching lines @@
   http_request_headers_.reset();
 }
 
 void NavigationItemImpl::ResetForCommit() {
   // Any state that only matters when a navigation item is pending should be
   // cleared here.
   set_is_renderer_initiated(false);
 }
 
 }  // namespace web