Call the DisconnectWindow interface methods on the UI thread.

remoting/host/chromoting_host.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_CHROMOTING_HOST_H_
 #define REMOTING_CHROMOTING_HOST_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 148 matching lines @@
 
   std::string GenerateHostAuthToken(const std::string& encoded_client_token);
 
   bool HasAuthenticatedClients() const;
 
   void EnableCurtainMode(bool enable);
 
   void ProcessPreAuthentication(
       const scoped_refptr<protocol::ConnectionToClient>& connection);
 
+  // Show or hide the Disconnect window on the UI thread.  If |show| is false,
+  // hide the window, ignoring the |username| parameter.
+  void ShowDisconnectWindow(bool show, const std::string& username);
+
   // The context that the chromoting host runs on.
   ChromotingHostContext* context_;
 
   scoped_refptr<MutableHostConfig> config_;
 
   scoped_ptr<DesktopEnvironment> desktop_environment_;
 
   scoped_ptr<SignalStrategy> signal_strategy_;
 
   // The libjingle client. This is used to connect to the talk network to
@@ skipping 33 matching lines @@
   // Whether or not the host is running in "Me2Mom" mode, in which connections
   // are pre-authenticated, and hence the local login challenge can be bypassed.
   bool is_me2mom_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingHost);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CHROMOTING_HOST_H_