Use base::SizeTToString instead of std::to_string

net/log/bounded_file_net_log_observer.cc

 // Copyright 2016 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 "net/log/bounded_file_net_log_observer.h"
 
 #include <memory>
 #include <set>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread.h"
 #include "base/values.h"
 #include "net/log/net_log_util.h"
 #include "net/url_request/url_request_context.h"
 
 namespace {
 
 // Number of events that can build up in |write_queue_| before file thread
 // is triggered to drain the queue.
@@ skipping 321 matching lines @@
   event_files_.clear();
 }
 
 void BoundedFileNetLogObserver::FileWriter::IncrementCurrentFile() {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
 
   current_file_idx_++;
   current_file_idx_ %= total_num_files_;
   event_files_[current_file_idx_].reset();
   event_files_[current_file_idx_] = base::ScopedFILE(base::OpenFile(
-      directory_.AppendASCII("event_file_" + std::to_string(current_file_idx_) +
-                             ".json"),
+      directory_.AppendASCII("event_file_" +
+                             base::SizeTToString(current_file_idx_) + ".json"),
       "w"));
 }
 
 void BoundedFileNetLogObserver::FileWriter::Flush(
     scoped_refptr<BoundedFileNetLogObserver::WriteQueue> write_queue) {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
 
   EventQueue local_file_queue;
   write_queue->SwapQueue(&local_file_queue);
 
@@ skipping 18 matching lines @@
 void BoundedFileNetLogObserver::FileWriter::DeleteAllFiles() {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
 
   // Reset |event_files_| to release all file handles so base::DeleteFile can
   // safely access files.
   event_files_.clear();
 
   base::DeleteFile(directory_.AppendASCII("constants.json"), false);
   base::DeleteFile(directory_.AppendASCII("end_netlog.json"), false);
   for (size_t i = 0; i < total_num_files_; i++) {
-    base::DeleteFile(
-        directory_.AppendASCII("event_file_" + std::to_string(i) + ".json"),
-        false);
+    base::DeleteFile(directory_.AppendASCII("event_file_" +
+                                            base::SizeTToString(i) + ".json"),
+                     false);
   }
 }
 
 }  // namespace net