Moving host status events monitoring to a separate interface (HostStatusMonitor).

remoting/host/host_event_logger.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_HOST_HOST_EVENT_LOGGER_H_
 #define REMOTING_HOST_HOST_EVENT_LOGGER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 
 namespace remoting {
 
-class ChromotingHost;
+class HostStatusMonitor;
 
 class HostEventLogger {
  public:
   virtual ~HostEventLogger() {}
 
   // Creates an event-logger that monitors host status changes and logs
   // corresponding events to the OS-specific log (syslog/EventLog).
   static scoped_ptr<HostEventLogger> Create(
-      ChromotingHost* host, const std::string& application_name);
+      base::WeakPtr<HostStatusMonitor> monitor,
+      const std::string& application_name);
 
  protected:
   HostEventLogger() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HostEventLogger);
 };
 
 }
 
 #endif  // REMOTING_HOST_HOST_EVENT_LOGGER_H_