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

components/url_formatter/url_fixer.cc

 // Copyright (c) 2012 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 "components/url_formatter/url_fixer.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 169 matching lines @@
   base::FilePath input_path(text);
   PrepareStringForFileOps(input_path, &filename);
   if (filename.length() > 0 && filename[0] == '~')
     filename = FixupHomedir(filename);
 #endif
 
   // Here, we know the input looks like a file.
   GURL file_url = net::FilePathToFileURL(base::FilePath(filename));
   if (file_url.is_valid()) {
     return base::UTF16ToUTF8(url_formatter::FormatUrl(
-        file_url, std::string(), url_formatter::kFormatUrlOmitUsernamePassword,
+        file_url, url_formatter::kFormatUrlOmitUsernamePassword,
         net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr));
   }
 
   // Invalid file URL, just return the input.
   return text;
 }
 
 // Checks |domain| to see if a valid TLD is already present.  If not, appends
 // |desired_tld| to the domain, and prepends "www." unless it's already present.
 void AddDesiredTLD(const std::string& desired_tld, std::string* domain) {
@@ skipping 433 matching lines @@
   }
 
   // Put back the current directory if we saved it.
   if (!base_dir.empty())
     base::SetCurrentDirectory(old_cur_directory);
 
   if (is_file) {
     GURL file_url = net::FilePathToFileURL(full_path);
     if (file_url.is_valid())
       return GURL(base::UTF16ToUTF8(url_formatter::FormatUrl(
-          file_url, std::string(),
-          url_formatter::kFormatUrlOmitUsernamePassword,
+          file_url, url_formatter::kFormatUrlOmitUsernamePassword,
           net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr)));
     // Invalid files fall through to regular processing.
   }
 
 // Fall back on regular fixup for this input.
 #if defined(OS_WIN)
   std::string text_utf8 = base::WideToUTF8(text.value());
 #elif defined(OS_POSIX)
   std::string text_utf8 = text.value();
 #endif
@@ skipping 14 matching lines @@
 }
 
 bool IsEquivalentScheme(const std::string& scheme1,
                         const std::string& scheme2) {
   return scheme1 == scheme2 ||
          (scheme1 == url::kAboutScheme && scheme2 == kChromeUIScheme) ||
          (scheme1 == kChromeUIScheme && scheme2 == url::kAboutScheme);
 }
 
 }  // namespace url_formatter