Add JingleSession::OnRouteChange(), and pass IP endpoint information to a

remoting/protocol/session.h

Index: remoting/protocol/session.h
diff --git a/remoting/protocol/session.h b/remoting/protocol/session.h
index 7003a1384b93e8aed5470c52393b5603d0b2d418..bef4a84a9a986cc9de77310f3d8eaa83fb5b73c1 100644
--- a/remoting/protocol/session.h
+++ b/remoting/protocol/session.h
@@ -13,6 +13,7 @@
 #include "remoting/protocol/session_config.h"
 
 namespace net {
+class IPEndPoint;
 class Socket;
 class StreamSocket;
 }  // namespace net
@@ -68,6 +69,12 @@ class Session : public base::NonThreadSafe {
   // handler unless |state| is CLOSED or FAILED.
   typedef base::Callback<void(State state)> StateChangeCallback;
 
+  // TODO(lambroslambrou): Merge this together with StateChangeCallback into a
+  // single interface.
+  typedef base::Callback<void(
+      const std::string& channel_name,
+      const net::IPEndPoint& end_point)> RouteChangeCallback;
+
   // TODO(sergeyu): Specify connection error code when channel
   // connection fails.
   typedef base::Callback<void(net::StreamSocket*)> StreamChannelCallback;
@@ -77,9 +84,13 @@ class Session : public base::NonThreadSafe {
   virtual ~Session() { }
 
   // Set callback that is called when state of the connection is changed.
-  // Must be called on the jingle thread only.
   virtual void SetStateChangeCallback(const StateChangeCallback& callback) = 0;
 
+  // Set callback that is called when the route for a channel is changed.
+  // The callback must be registered immediately after
+  // JingleSessionManager::Connect() or from OnIncomingSession() callback.
+  virtual void SetRouteChangeCallback(const RouteChangeCallback& callback) = 0;
+
   // Returns error code for a failed session.
   virtual Error error() = 0;