Access Session::config() and Session::jid() on the correct thread only.

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 3de73fde6ed0216e66f10f8df2b9622594679649..132dc9854ffea005039d44bfeac0bb5669b08158 100644
--- a/remoting/host/host_status_observer.h
+++ b/remoting/host/host_status_observer.h
@@ -31,10 +31,8 @@ class HostStatusObserver {
   // Called on the main thread when a client authenticates, or disconnects.
   // The observer must not tear-down ChromotingHost state on receipt of
   // this callback; it is purely informational.
-  virtual void OnClientAuthenticated(
-      remoting::protocol::ConnectionToClient* client) = 0;
-  virtual void OnClientDisconnected(
-      remoting::protocol::ConnectionToClient* client) = 0;
+  virtual void OnClientAuthenticated(const std::string& jid) = 0;
+  virtual void OnClientDisconnected(const std::string& jid) = 0;
 
   // Called on the main thread when the host shuts down.
   virtual void OnShutdown() = 0;