Add config to prune TURN ports

webrtc/p2p/base/port_unittest.cc

 /*
  *  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 134 matching lines @@
   virtual void PrepareAddress() {
     rtc::SocketAddress addr(ip(), min_port());
     AddAddress(addr, addr, rtc::SocketAddress(), "udp", "", "", Type(),
                ICE_TYPE_PREFERENCE_HOST, 0, true);
   }
 
   virtual bool SupportsProtocol(const std::string& protocol) const {
     return true;
   }
 
+  virtual ProtocolType GetProtocol() const { return PROTO_UDP; }
+
   // Exposed for testing candidate building.
   void AddCandidateAddress(const rtc::SocketAddress& addr) {
     AddAddress(addr, addr, rtc::SocketAddress(), "udp", "", "", Type(),
                type_preference_, 0, false);
   }
   void AddCandidateAddress(const rtc::SocketAddress& addr,
                            const rtc::SocketAddress& base_address,
                            const std::string& type,
                            int type_preference,
                            bool final) {
@@ skipping 2547 matching lines @@
       port->CreateConnection(candidate, Port::ORIGIN_MESSAGE);
   EXPECT_NE(conn1, conn2);
   conn_in_use = port->GetConnection(address);
   EXPECT_EQ(conn2, conn_in_use);
   EXPECT_EQ(2u, conn_in_use->remote_candidate().generation());
 
   // Make sure the new connection was not deleted.
   rtc::Thread::Current()->ProcessMessages(300);
   EXPECT_TRUE(port->GetConnection(address) != nullptr);
 }