Use rtc::ToString instead of std::to_string.

webrtc/p2p/base/icetransportinternal.h

 /*
  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_P2P_BASE_ICETRANSPORTINTERNAL_H_
 #define WEBRTC_P2P_BASE_ICETRANSPORTINTERNAL_H_
 
 #include <string>
 
+#include "webrtc/base/stringencode.h"
 #include "webrtc/p2p/base/candidate.h"
 #include "webrtc/p2p/base/candidatepairinterface.h"
 #include "webrtc/p2p/base/jseptransport.h"
 #include "webrtc/p2p/base/packettransportinternal.h"
 #include "webrtc/p2p/base/transportdescription.h"
 
 namespace webrtc {
 class MetricsObserverInterface;
 }
 
@@ skipping 110 matching lines @@
   sigslot::signal1<IceTransportInternal*> SignalRoleConflict;
 
   // Emitted whenever the transport state changed.
   sigslot::signal1<IceTransportInternal*> SignalStateChanged;
 
   // Invoked when the transport is being destroyed.
   sigslot::signal1<IceTransportInternal*> SignalDestroyed;
 
   // Debugging description of this transport.
   std::string debug_name() const override {
-    return transport_name() + " " + std::to_string(component());
+    return transport_name() + " " + rtc::ToString(component());
   }
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_ICETRANSPORTINTERNAL_H_