More minor improvements to BaseChannel/transport code.

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 147d568a2e2b52f0949003df0766ba917f43edb1..6929a6e7f16a1a2094b920957ce6f10b97c4ffb9 100644
--- a/webrtc/p2p/base/transportcontroller.h
+++ b/webrtc/p2p/base/transportcontroller.h
@@ -121,6 +121,8 @@ class TransportController : public sigslot::has_slots<>,
 
   // Decrements a channel's reference count, and destroys the channel if
   // nothing is referencing it.
+  virtual void DestroyTransportChannel(const std::string& transport_name,
+                                       int component);
   virtual void DestroyTransportChannel_n(const std::string& transport_name,
                                          int component);