Added JsonMessage to the control channel.

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 <string>
 
 #include "base/basictypes.h"
@@ skipping 24 matching lines @@
   virtual void OnConnectionReady(bool ready) = 0;
 
   // Passes the final set of capabilities negotiated between the client and host
   // to the application.
   virtual void SetCapabilities(const std::string& capabilities) = 0;
 
   // Passes a pairing response message to the client.
   virtual void SetPairingResponse(
       const protocol::PairingResponse& pairing_response) = 0;
 
+  // Deliver an extension message from the host to the client.
+  virtual void DeliverHostMessage(
+      const protocol::ExtensionMessage& message) = 0;
+
   // Get the view's ClipboardStub implementation.
   virtual protocol::ClipboardStub* GetClipboardStub() = 0;
 
   // Get the view's CursorShapeStub implementation.
   virtual protocol::CursorShapeStub* GetCursorShapeStub() = 0;
 
   // Get the view's TokenFetcher implementation.
   // The TokenFetcher implementation may require interactive authentication.
   virtual scoped_ptr<protocol::ThirdPartyClientAuthenticator::TokenFetcher>
   GetTokenFetcher(const std::string& host_public_key) = 0;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_CLIENT_USER_INTERFACE_H_