Removing references to webrtc::PortAllocatorFactoryInterface.

remoting/protocol/webrtc_transport.cc

Index: remoting/protocol/webrtc_transport.cc
diff --git a/remoting/protocol/webrtc_transport.cc b/remoting/protocol/webrtc_transport.cc
index 3a6ad6ffa8bc15acac88eabc886310099870f38c..e1093e5d85b01a85ae6a2460cb015c5d52e6e6c0 100644
--- a/remoting/protocol/webrtc_transport.cc
+++ b/remoting/protocol/webrtc_transport.cc
@@ -108,8 +108,7 @@ class SetSessionDescriptionObserver
 }  // namespace
 
 WebrtcTransport::WebrtcTransport(
-    rtc::scoped_refptr<webrtc::PortAllocatorFactoryInterface>
-        port_allocator_factory,
+    scoped_refptr<PortAllocatorFactoryInterface> port_allocator_factory,
     TransportRole role,
     scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner)
     : port_allocator_factory_(port_allocator_factory),
@@ -250,8 +249,11 @@ void WebrtcTransport::DoStart(rtc::Thread* worker_thread) {
   constraints.AddMandatory(webrtc::MediaConstraintsInterface::kEnableDtlsSrtp,
                            webrtc::MediaConstraintsInterface::kValueTrue);
 
+  rtc::scoped_ptr<cricket::PortAllocator> port_allocator(
+      port_allocator_factory_->CreatePortAllocator());
+
   peer_connection_ = peer_connection_factory_->CreatePeerConnection(
-      rtc_config, &constraints, port_allocator_factory_, nullptr, this);
+      rtc_config, &constraints, std::move(port_allocator), nullptr, this);
 
   data_stream_adapter_.Initialize(peer_connection_,
                                   role_ == TransportRole::SERVER);
@@ -473,8 +475,7 @@ void WebrtcTransport::AddPendingCandidatesIfPossible() {
 
 WebrtcTransportFactory::WebrtcTransportFactory(
     SignalStrategy* signal_strategy,
-    rtc::scoped_refptr<webrtc::PortAllocatorFactoryInterface>
-        port_allocator_factory,
+    scoped_refptr<PortAllocatorFactoryInterface> port_allocator_factory,
     TransportRole role)
     : signal_strategy_(signal_strategy),
       port_allocator_factory_(port_allocator_factory),