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..6b52ff0b01b411c0cd9209ee480690f774773f7e 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 +69,10 @@ class Session : public base::NonThreadSafe {
   // handler unless |state| is CLOSED or FAILED.
   typedef base::Callback<void(State state)> StateChangeCallback;
 
+  typedef base::Callback<void(

[Sergey Ulanov, 2012/01/23 20:33:37]

maybe add TODO to merge these two callbacks to a single interface. Just to make
this code consistent with everything else.

[Lambros, 2012/01/24 19:50:50]

Done.

+      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;
@@ -80,6 +85,10 @@ class Session : public base::NonThreadSafe {
   // Must be called on the jingle thread only.

[Sergey Ulanov, 2012/01/23 20:33:37]

This comment is not necessary anymore, Session interface is not thread-safe now,
and it is not necessary to state it here.

[Lambros, 2012/01/24 19:50:50]

Done.

   virtual void SetStateChangeCallback(const StateChangeCallback& callback) = 0;
 
+  // Set callback that is called when the route for a channel is changed.

[Sergey Ulanov, 2012/01/23 20:33:37]

It's also worth mentioning that the callback must be registered immediately
after JingleSessionManager::Connect() or from OnIncomingSession() callback.

[Lambros, 2012/01/24 19:50:50]

Done.

+  // Must be called on the jingle thread only.

[Sergey Ulanov, 2012/01/23 20:33:37]

remove this comments

[Lambros, 2012/01/24 19:50:50]

Done.

+  virtual void SetRouteChangeCallback(const RouteChangeCallback& callback) = 0;
+
   // Returns error code for a failed session.
   virtual Error error() = 0;