Propagate connection state from networking layer to UI.

remoting/client/client_user_interface.h

 // Copyright (c) 2012 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_CLIENT_CLIENT_USER_INTERFACE_H_
 #define REMOTING_CLIENT_CLIENT_USER_INTERFACE_H_
 
 #include "base/basictypes.h"
 #include "remoting/protocol/connection_to_host.h"
 
 namespace remoting {
 
 namespace protocol {
 class ClipboardEvent;
 class CursorShapeInfo;
 }  // namespace protocol
 
 // ClientUserInterface is an interface that must be implemented by the
 // object responsible for chromoting client user interface.
 class ClientUserInterface {
  public:
   virtual ~ClientUserInterface() {}
 
   // Record the update the state of the connection, updating the UI as needed.
   virtual void OnConnectionState(protocol::ConnectionToHost::State state,
                                  protocol::ErrorCode error) = 0;
+  virtual void OnConnectionInactive(bool inactive) = 0;
   virtual void ProcessClipboardEvent(
       const protocol::ClipboardEvent& event) = 0;
   virtual void SetCursorShape(
       const protocol::CursorShapeInfo& cursor_shape) = 0;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_CLIENT_USER_INTERFACE_H_