Use base::StringPairs where appropriate from src/chrome/browser

chrome/browser/drive/fake_drive_service.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 "chrome/browser/drive/fake_drive_service.h"
 
 #include <string>
 
 #include "base/files/file_util.h"
 #include "base/json/json_string_value_serializer.h"
@@ skipping 440 matching lines @@
   // previous method invocation, so it should start with "http://localhost/?".
   // See also GetChangeListInternal.
   DCHECK_EQ(next_link.host(), "localhost");
   DCHECK_EQ(next_link.path(), "/");
 
   int64 start_changestamp = 0;
   std::string search_query;
   std::string directory_resource_id;
   int start_offset = 0;
   int max_results = default_max_results_;
-  std::vector<std::pair<std::string, std::string> > parameters;
+  base::StringPairs parameters;
   if (base::SplitStringIntoKeyValuePairs(
           next_link.query(), '=', '&', &parameters)) {
     for (size_t i = 0; i < parameters.size(); ++i) {
       if (parameters[i].first == "changestamp") {
         base::StringToInt64(parameters[i].second, &start_changestamp);
       } else if (parameters[i].first == "q") {
         search_query =
             net::UnescapeURLComponent(parameters[i].second,
                                       net::UnescapeRule::URL_SPECIAL_CHARS);
       } else if (parameters[i].first == "parent") {
@@ skipping 1216 matching lines @@
 
   NOTREACHED();
   return CancelCallback();
 }
 
 void FakeDriveService::NotifyObservers() {
   FOR_EACH_OBSERVER(ChangeObserver, change_observers_, OnNewChangeAvailable());
 }
 
 }  // namespace drive