Add UMA metrics for ICE regathering reasons.

webrtc/p2p/client/basicportallocator.h

 /*
  *  Copyright 2004 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 44 matching lines @@
 
   PortAllocatorSession* CreateSessionInternal(
       const std::string& content_name,
       int component,
       const std::string& ice_ufrag,
       const std::string& ice_pwd) override;
 
   // Convenience method that adds a TURN server to the configuration.
   void AddTurnServer(const RelayServerConfig& turn_server);
 
+  void ReportIceRegatheringReason(IceRegatheringReason reason) override;
+
  private:
   void Construct();
 
   rtc::NetworkManager* network_manager_;
   rtc::PacketSocketFactory* socket_factory_;
   bool allow_tcp_listen_;
   int network_ignore_mask_ = rtc::kDefaultNetworkIgnoreMask;
 };
 
 struct PortConfiguration;
@@ skipping 290 matching lines @@
   std::unique_ptr<rtc::AsyncPacketSocket> udp_socket_;
   // There will be only one udp port per AllocationSequence.
   UDPPort* udp_port_;
   std::vector<TurnPort*> turn_ports_;
   int phase_;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_CLIENT_BASICPORTALLOCATOR_H_