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

device/core/device_monitor_win.cc

 // Copyright 2014 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.
 
 #include "device/core/device_monitor_win.h"
 
 #include <windows.h>
 #include <dbt.h>
 #include <map>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/win/message_window.h"
 
 namespace device {
 
 class DeviceMonitorMessageWindow;
 
 namespace {
 
@@ skipping 171 matching lines @@
                     OnDeviceAdded(class_guid, device_path));
 }
 
 void DeviceMonitorWin::NotifyDeviceRemoved(const GUID& class_guid,
                                            const std::string& device_path) {
   FOR_EACH_OBSERVER(Observer, observer_list_,
                     OnDeviceRemoved(class_guid, device_path));
 }
 
 }  // namespace device