Rename "PacketTransportInterface" to "PacketTransportInternal".

webrtc/p2p/base/transportcontroller.h

Index: webrtc/p2p/base/transportcontroller.h
diff --git a/webrtc/p2p/base/transportcontroller.h b/webrtc/p2p/base/transportcontroller.h
index 33306c714fc378ffa5f5e26bd3e4eaea6176f274..091e70e993f240870154022a90f2d88ffa1beae6 100644
--- a/webrtc/p2p/base/transportcontroller.h
+++ b/webrtc/p2p/base/transportcontroller.h
@@ -28,7 +28,7 @@
 
 namespace rtc {
 class Thread;
-class PacketTransportInterface;
+class PacketTransportInternal;
 }
 namespace webrtc {
 class MetricsObserverInterface;
@@ -231,8 +231,8 @@ class TransportController : public sigslot::has_slots<>,
   void SetMetricsObserver_n(webrtc::MetricsObserverInterface* metrics_observer);
 
   // Handlers for signals from Transport.
-  void OnChannelWritableState_n(rtc::PacketTransportInterface* transport);
-  void OnChannelReceivingState_n(rtc::PacketTransportInterface* transport);
+  void OnChannelWritableState_n(rtc::PacketTransportInternal* transport);
+  void OnChannelReceivingState_n(rtc::PacketTransportInternal* transport);
   void OnChannelGatheringState_n(IceTransportInternal* channel);
   void OnChannelCandidateGathered_n(IceTransportInternal* channel,
                                     const Candidate& candidate);