Make the state transition for a PortAllocatorSession in each derived class

webrtc/p2p/client/basicportallocator.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 220 matching lines @@
                      [this, &port](const Candidate& candidate) {
                        return CandidatePairable(candidate, port.port());
                      })) {
       port.set_has_pairable_candidate(false);
     }
   }
 }
 
 void BasicPortAllocatorSession::StartGettingPorts() {
   network_thread_ = rtc::Thread::Current();
-  PortAllocatorSession::StartGettingPorts();
+  state_ = SessionState::GATHERING;
   if (!socket_factory_) {
     owned_socket_factory_.reset(
         new rtc::BasicPacketSocketFactory(network_thread_));
     socket_factory_ = owned_socket_factory_.get();
   }
 
   network_thread_->Post(RTC_FROM_HERE, this, MSG_CONFIG_START);
 
   LOG(LS_INFO) << "Pruning turn ports "
                << (prune_turn_ports_ ? "enabled" : "disabled");
 }
 
 void BasicPortAllocatorSession::StopGettingPorts() {
   ASSERT(rtc::Thread::Current() == network_thread_);
   network_thread_->Post(RTC_FROM_HERE, this, MSG_CONFIG_STOP);
   ClearGettingPorts();
   // Note: this must be called after ClearGettingPorts because both may set the
   // session state and we should set the state to STOPPED.
-  PortAllocatorSession::StopGettingPorts();
+  state_ = SessionState::STOPPED;
 }
 
 void BasicPortAllocatorSession::ClearGettingPorts() {
   ASSERT(rtc::Thread::Current() == network_thread_);
   network_thread_->Clear(this, MSG_ALLOCATE);
   for (uint32_t i = 0; i < sequences_.size(); ++i) {
     sequences_[i]->Stop();
   }
-  PortAllocatorSession::ClearGettingPorts();
+  state_ = SessionState::CLEARED;
 }
 
 std::vector<rtc::Network*> BasicPortAllocatorSession::GetFailedNetworks() {
   std::vector<rtc::Network*> networks = GetNetworks();
 
   // A network interface may have both IPv4 and IPv6 networks. Only if
   // neither of the networks has any connections, the network interface
   // is considered failed and need to be regathered on.
   std::set<std::string> networks_with_connection;
   for (const PortData& data : ports_) {
@@ skipping 1138 matching lines @@
   ServerAddresses servers;
   for (size_t i = 0; i < relays.size(); ++i) {
     if (relays[i].type == turn_type && SupportsProtocol(relays[i], type)) {
       servers.insert(relays[i].ports.front().address);
     }
   }
   return servers;
 }
 
 }  // namespace cricket