Remove old Authentication code that we don't use or need.

remoting/host/chromoting_host.h

Index: remoting/host/chromoting_host.h
diff --git a/remoting/host/chromoting_host.h b/remoting/host/chromoting_host.h
index 270c9ba36e1d26866aefc4a9748c30009aa26ed4..76c204c4be39a949099462dc929fd957bc774d3a 100644
--- a/remoting/host/chromoting_host.h
+++ b/remoting/host/chromoting_host.h
@@ -100,6 +100,7 @@ class ChromotingHost : public base::RefCountedThreadSafe<ChromotingHost>,
 
   ////////////////////////////////////////////////////////////////////////////
   // protocol::ConnectionToClient::EventHandler implementation.
+  // TODO(sergeyu): Move this to ClientSession.
   virtual void OnConnectionOpened(protocol::ConnectionToClient* client);
   virtual void OnConnectionClosed(protocol::ConnectionToClient* client);
   virtual void OnConnectionFailed(protocol::ConnectionToClient* client);
@@ -114,9 +115,7 @@ class ChromotingHost : public base::RefCountedThreadSafe<ChromotingHost>,
 
   ////////////////////////////////////////////////////////////////////////////
   // ClientSession::EventHandler implementation.
-  virtual void LocalLoginSucceeded(
-      scoped_refptr<protocol::ConnectionToClient> client);
-  virtual void LocalLoginFailed(
+  virtual void OnAuthenticationComplete(
       scoped_refptr<protocol::ConnectionToClient> client);
 
   // SessionManager::Listener implementation.