Log client IP addresses to syslog in Me2Me host.

remoting/host/host_status_observer.h

Index: remoting/host/host_status_observer.h
diff --git a/remoting/host/host_status_observer.h b/remoting/host/host_status_observer.h
index c3c8a0b34c6ad9094f5f73c235d0d3e89d73c2c6..29a7193c9e5052af137995a3331d4894a572a038 100644
--- a/remoting/host/host_status_observer.h
+++ b/remoting/host/host_status_observer.h
@@ -7,6 +7,10 @@
 
 #include <string>
 
+namespace net {
+class IPEndPoint;
+}  // namespace net
+
 namespace remoting {
 class SignalStrategy;
 
@@ -26,6 +30,12 @@ class HostStatusObserver {
   virtual void OnClientAuthenticated(const std::string& jid) = 0;
   virtual void OnClientDisconnected(const std::string& jid) = 0;
 
+  // Called on notification of a route change event, when a channel is
+  // connected.
+  virtual void OnClientIpAddress(const std::string& jid,
+                                 const std::string& channel_name,
+                                 const net::IPEndPoint& end_point) { }
+
   // Called when the host shuts down.
   virtual void OnShutdown() = 0;
 };