Add logging of host lookups made by TurnPort to the RtcEventLog.

webrtc/rtc_base/nethelpers.h

 /*
  *  Copyright 2008 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.
  */
 
@@ skipping 22 matching lines @@
 // the SignalDone from AsyncResolverInterface when the operation completes.
 class AsyncResolver : public SignalThread, public AsyncResolverInterface {
  public:
   AsyncResolver();
   ~AsyncResolver() override;
 
   void Start(const SocketAddress& addr) override;
   bool GetResolvedAddress(int family, SocketAddress* addr) const override;
   int GetError() const override;
   void Destroy(bool wait) override;
+  int64_t GetResolveElapsedTimeMilliseconds() const override;
 
   const std::vector<IPAddress>& addresses() const { return addresses_; }
   void set_error(int error) { error_ = error; }
 
  protected:
   void DoWork() override;
   void OnWorkDone() override;
 
  private:
   SocketAddress addr_;
   std::vector<IPAddress> addresses_;
   int error_;
+  int64_t resolve_time_ms_;

[Taylor Brandstetter, 2017/08/29 02:30:56]

Initialize to 0 here?

[jonaso1, 2017/08/29 10:18:28]

Done.

 };
 
 // rtc namespaced wrappers for inet_ntop and inet_pton so we can avoid
 // the windows-native versions of these.
 const char* inet_ntop(int af, const void *src, char* dst, socklen_t size);
 int inet_pton(int af, const char* src, void *dst);
 
 bool HasIPv4Enabled();
 bool HasIPv6Enabled();
 }  // namespace rtc
 
 #endif  // WEBRTC_RTC_BASE_NETHELPERS_H_