Revert of Removing references to webrtc::PortAllocatorFactoryInterface.

remoting/protocol/webrtc_transport.h

Index: remoting/protocol/webrtc_transport.h
diff --git a/remoting/protocol/webrtc_transport.h b/remoting/protocol/webrtc_transport.h
index 6fc79d72f43676c7b73bbdd583ed3e0260b8819e..afba35e5fbd61486e9a6dc397bd6a708e9a64efa 100644
--- a/remoting/protocol/webrtc_transport.h
+++ b/remoting/protocol/webrtc_transport.h
@@ -6,13 +6,11 @@
 #define REMOTING_PROTOCOL_WEBRTC_TRANSPORT_H_
 
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/timer/timer.h"
-#include "remoting/protocol/port_allocator_factory.h"
 #include "remoting/protocol/transport.h"
 #include "remoting/protocol/webrtc_data_stream_adapter.h"
 #include "remoting/signaling/signal_strategy.h"
@@ -29,7 +27,8 @@
                         public webrtc::PeerConnectionObserver {
  public:
   WebrtcTransport(rtc::Thread* worker_thread,
-                  PortAllocatorFactory* port_allocator_factory,
+                  rtc::scoped_refptr<webrtc::PortAllocatorFactoryInterface>
+                      port_allocator_factory,
                   TransportRole role);
   ~WebrtcTransport() override;
 
@@ -80,7 +79,8 @@
 
   base::ThreadChecker thread_checker_;
 
-  PortAllocatorFactory* port_allocator_factory_;
+  rtc::scoped_refptr<webrtc::PortAllocatorFactoryInterface>
+      port_allocator_factory_;
   TransportRole role_;
   EventHandler* event_handler_ = nullptr;
   rtc::Thread* worker_thread_;
@@ -113,7 +113,8 @@
   WebrtcTransportFactory(
       rtc::Thread* worker_thread,
       SignalStrategy* signal_strategy,
-      scoped_ptr<PortAllocatorFactory> port_allocator_factory,
+      rtc::scoped_refptr<webrtc::PortAllocatorFactoryInterface>
+          port_allocator_factory,
       TransportRole role);
   ~WebrtcTransportFactory() override;
 
@@ -123,7 +124,8 @@
  private:
   rtc::Thread* worker_thread_;
   SignalStrategy* signal_strategy_;
-  scoped_ptr<PortAllocatorFactory> port_allocator_factory_;
+  rtc::scoped_refptr<webrtc::PortAllocatorFactoryInterface>
+      port_allocator_factory_;
   TransportRole role_;
 
   DISALLOW_COPY_AND_ASSIGN(WebrtcTransportFactory);