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

content/public/browser/navigation_entry.h

Index: content/public/browser/navigation_entry.h
diff --git a/content/public/browser/navigation_entry.h b/content/public/browser/navigation_entry.h
index 008b151631aa2793eea1c337e9884b26771db674..5041cbecd9da986464da06032c6685e15d10a61c 100644
--- a/content/public/browser/navigation_entry.h
+++ b/content/public/browser/navigation_entry.h
@@ -109,11 +109,8 @@ class NavigationEntry {
   // Page-related helpers ------------------------------------------------------
 
   // Returns the title to be displayed on the tab. This could be the title of
-  // the page if it is available or the URL. |languages| is the list of
-  // accepted languages (e.g., prefs::kAcceptLanguages) or empty if proper
-  // URL formatting isn't needed (e.g., unit tests).
-  virtual const base::string16& GetTitleForDisplay(
-      const std::string& languages) const = 0;
+  // the page if it is available or the URL.
+  virtual const base::string16& GetTitleForDisplay() const = 0;
 
   // Returns true if the current tab is in view source mode. This will be false
   // if there is no navigation.