Use HttpRequestHeaders for extra_headers.

base/string_util.cc

 // Copyright (c) 2010 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 "base/string_util.h"
 
 #include "build/build_config.h"
 
 #include <ctype.h>
 #include <errno.h>
@@ skipping 1340 matching lines @@
                             std::vector<string16>* r) {
   SplitStringUsingSubstrT(str, s, r);
 }
 
 void SplitStringUsingSubstr(const std::string& str,
                             const std::string& s,
                             std::vector<std::string>* r) {
   SplitStringUsingSubstrT(str, s, r);
 }
 
-std::vector<string16> SplitStringUsingSubstr(const string16& str,
-                                             const string16& s) {
-  std::vector<string16> result;
-  SplitStringUsingSubstr(str, s, &result);
-  return result;
-}
-
-std::vector<std::string> SplitStringUsingSubstr(const std::string& str,
-                                                const std::string& s) {
-  std::vector<std::string> result;
-  SplitStringUsingSubstr(str, s, &result);
-  return result;
-}
-
 template<typename STR>
 static size_t TokenizeT(const STR& str,
                         const STR& delimiters,
                         std::vector<STR>* tokens) {
   tokens->clear();
 
   typename STR::size_type start = str.find_first_not_of(delimiters);
   while (start != STR::npos) {
     typename STR::size_type end = str.find_first_of(delimiters, start + 1);
     if (end == STR::npos) {
@@ skipping 503 matching lines @@
   // Each input byte creates two output hex characters.
   std::string ret(size * 2, '\0');
 
   for (size_t i = 0; i < size; ++i) {
     char b = reinterpret_cast<const char*>(bytes)[i];
     ret[(i * 2)] = kHexChars[(b >> 4) & 0xf];
     ret[(i * 2) + 1] = kHexChars[b & 0xf];
   }
   return ret;
 }