Add VideoPacket struct for video packets. Refactor Decode interface to use it.

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