Use base::StringPairs where appropriate from /components

components/auto_login_parser/auto_login_parser.cc

 // Copyright (c) 2013 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/auto_login_parser/auto_login_parser.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 26 matching lines @@
 
 bool ParseHeader(const std::string& header,
                  RealmRestriction realm_restriction,
                  HeaderData* header_data) {
   // TODO(pliard): Investigate/fix potential internationalization issue. It
   // seems that "account" from the x-auto-login header might contain non-ASCII
   // characters.
   if (header.empty())
     return false;
 
-  std::vector<std::pair<std::string, std::string> > pairs;
+  base::StringPairs pairs;
   if (!base::SplitStringIntoKeyValuePairs(header, '=', '&', &pairs))
     return false;
 
   // Parse the information from the |header| string.
   HeaderData local_params;
-  for (size_t i = 0; i < pairs.size(); ++i) {
-    const std::pair<std::string, std::string>& pair = pairs[i];
-    std::string unescaped_value(net::UnescapeURLComponent(
-          pair.second, net::UnescapeRule::URL_SPECIAL_CHARS));
-    if (pair.first == "realm") {
+  for (base::StringPairs::const_iterator it = pairs.begin(); it != pairs.end();
+       ++it) {
+    const std::string& key = it->first;
+    const std::string& value = it->second;
+    std::string unescaped_value(
+        net::UnescapeURLComponent(value, net::UnescapeRule::URL_SPECIAL_CHARS));
+    if (key == "realm") {
       if (!MatchRealm(unescaped_value, realm_restriction))
         return false;
       local_params.realm = unescaped_value;
-    } else if (pair.first == "account") {
+    } else if (key == "account") {
       local_params.account = unescaped_value;
-    } else if (pair.first == "args") {
+    } else if (key == "args") {
       local_params.args = unescaped_value;
     }
   }
   if (local_params.realm.empty() || local_params.args.empty())
     return false;
 
   *header_data = local_params;
   return true;
 }
 
 bool ParserHeaderInResponse(net::URLRequest* request,
                             RealmRestriction realm_restriction,
                             HeaderData* header_data) {
   std::string header_string;
   request->GetResponseHeaderByName(kHeaderName, &header_string);
   return ParseHeader(header_string, realm_restriction, header_data);
 }
 
 }  // namespace auto_login_parser