Add VideoReader and VideoWriter interfaces.

remoting/client/host_connection.h

 // Copyright (c) 2010 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_HOST_CONNECTION_H_
 #define REMOTING_CLIENT_HOST_CONNECTION_H_
 
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "remoting/proto/internal.pb.h"
 #include "remoting/protocol/message_decoder.h"
 
 namespace remoting {
 
+class VideoStub;
+
 struct ClientConfig;
 
 class HostConnection {
  public:
   class HostEventCallback {
    public:
     virtual ~HostEventCallback() {}
 
     // Handles an event received by the HostConnection. Ownership of
     // the message is passed to the callee.
     virtual void HandleMessage(HostConnection* conn,
                                ChromotingHostMessage* message) = 0;
 
     // Called when the network connection is opened.
     virtual void OnConnectionOpened(HostConnection* conn) = 0;
 
     // Called when the network connection is closed.
     virtual void OnConnectionClosed(HostConnection* conn) = 0;
 
     // Called when the network connection has failed.
     virtual void OnConnectionFailed(HostConnection* conn) = 0;
   };
 
   virtual ~HostConnection() {}
 
   // TODO(ajwong): We need to generalize this API.
   virtual void Connect(const ClientConfig& config,
-                       HostEventCallback* event_callback) = 0;
+                       HostEventCallback* event_callback,
+                       VideoStub* video_stub) = 0;
   virtual void Disconnect() = 0;
 
   // Send an input event to the host.
   virtual void SendEvent(const ChromotingClientMessage& msg) = 0;
 
  protected:
   HostConnection() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HostConnection);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_HOST_CONNECTION_H_