Stop sending Accept-Charset HTTP header.

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 <string>
 #include <vector>
 
@@ skipping 158 matching lines @@
   // 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);
 
-  // Given a charset, return the list with a qvalue. If charset is utf-8,
-  // it will return 'utf-8,*;q=0.5'. Otherwise (e.g. 'euc-jp'), it'll return
-  // 'euc-jp,utf-8;q=0.7,*;q=0.3'.
-  static std::string GenerateAcceptCharsetHeader(const std::string& charset);
-
   // 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.
   static bool HasStrongValidators(HttpVersion version,
                                   const std::string& etag_header,
@@ skipping 161 matching lines @@
     // into the original's unquoted_value_ member.
     std::string unquoted_value_;
 
     bool value_is_quoted_;
   };
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_UTIL_H_