Simplify It2Me host shutdown

remoting/host/client_session.h

Index: remoting/host/client_session.h
diff --git a/remoting/host/client_session.h b/remoting/host/client_session.h
index 7b9db05a46e691006334b41fd62cf55837e5f597..aa4efc537430af352059b3e083a1b33f848c1698 100644
--- a/remoting/host/client_session.h
+++ b/remoting/host/client_session.h
@@ -60,9 +60,8 @@ class ClientSession
     // Called after authentication has started.
     virtual void OnSessionAuthenticating(ClientSession* client) = 0;
 
-    // Called after authentication has finished successfully. Returns true if
-    // the connection is allowed, or false otherwise.
-    virtual bool OnSessionAuthenticated(ClientSession* client) = 0;
+    // Called after authentication has finished successfully.
+    virtual void OnSessionAuthenticated(ClientSession* client) = 0;
 
     // Called after we've finished connecting all channels.
     virtual void OnSessionChannelsConnected(ClientSession* client) = 0;