Fix IWYU violators that don't include scoped_ptr.h in Windows build.

remoting/host/win/host_service.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_WIN_HOST_SERVICE_H_
 #define REMOTING_HOST_WIN_HOST_SERVICE_H_
 
 #include <windows.h>
 #include <stdint.h>
 
 #include <list>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/waitable_event.h"
 #include "remoting/host/win/wts_terminal_monitor.h"
 
 namespace base {
 class CommandLine;
 class SingleThreadTaskRunner;
 }  // namespace base
 
@@ skipping 100 matching lines @@
 
   // Singleton.
   friend struct base::DefaultSingletonTraits<HostService>;
 
   DISALLOW_COPY_AND_ASSIGN(HostService);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_WIN_HOST_SERVICE_H_