Extend with a language code in http accept languages

net/http/http_util.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_UTIL_H_
 #define NET_HTTP_HTTP_UTIL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 193 matching lines @@
   // TODO(crbug.com/671799): Should remove or internalize this to
   //                         HttpResponseHeaders.
   static std::string AssembleRawHeaders(const char* buf, int buf_len);
 
   // Converts assembled "raw headers" back to the HTTP response format. That is
   // convert each \0 occurence to CRLF. This is used by DevTools.
   // Since all line continuations info is already lost at this point, the result
   // consists of status line and then one line for each header.
   static std::string ConvertHeadersBackToHTTPResponse(const std::string& str);
 
-  // Given a comma separated ordered list of language codes, return
-  // the list with a qvalue appended to each language.
-  // The way qvalues are assigned is rather simple. The qvalue
-  // starts with 1.0 and is decremented by 0.2 for each successive entry
-  // in the list until it reaches 0.2. All the entries after that are
-  // assigned the same qvalue of 0.2. Also, note that the 1st language
-  // will not have a qvalue added because the absence of a qvalue implicitly
-  // means q=1.0.
-  //
-  // When making a http request, this should be used to determine what
-  // to put in Accept-Language header. If a comma separated list of language
-  // codes *without* qvalue is sent, web servers regard all
-  // of them as having q=1.0 and pick one of them even though it may not
-  // be at the beginning of the list (see http://crbug.com/5899).
-  static std::string GenerateAcceptLanguageHeader(
-      const std::string& raw_language_list);
-
   // Helper. If |*headers| already contains |header_name| do nothing,
   // otherwise add <header_name> ": " <header_value> to the end of the list.
   static void AppendHeaderIfMissing(const char* header_name,
                                     const std::string& header_value,
                                     std::string* headers);
 
   // Returns true if the parameters describe a response with a strong etag or
   // last-modified header.  See section 13.3.3 of RFC 2616.
   // An empty string should be passed for missing headers.
   static bool HasStrongValidators(HttpVersion version,
@@ skipping 213 matching lines @@
     // True if quotes values are required to be properly quoted; false if
     // mismatched quotes and other problems with quoted values should be more
     // or less gracefully treated as valid.
     bool strict_quotes_;
   };
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_UTIL_H_