Initial pass at integrating Differ into the chromoting host code....

remoting/host/chromoting_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_CHROMOTING_HOST_H_
 #define REMOTING_CHROMOTING_HOST_H_
 
 #include <string>
 
 #include "base/thread.h"
+#include "remoting/base/encoder.h"
+#include "remoting/host/capturer.h"
 #include "remoting/host/client_connection.h"
+#include "remoting/host/event_executor.h"
 #include "remoting/host/heartbeat_sender.h"
 #include "remoting/jingle_glue/jingle_client.h"
 #include "remoting/jingle_glue/jingle_thread.h"
 
 class Task;
 
 namespace remoting {
 
 class Capturer;
 class ChromotingHostContext;
@@ skipping 126 matching lines @@
 
   // Lock is to lock the access to |state_|.
   Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingHost);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CHROMOTING_HOST_H_