Minor tweeks in virtual driver build.

cloud_print/virtual_driver/win/virtual_driver.gypi

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
    },
   'target_defaults': {
     'include_dirs': [
       '<(DEPTH)',
     ],
     'libraries': [
       'userenv.lib',
     ],
   },
   'targets' : [
     {
       'target_name': 'virtual_driver_lib<(virtual_driver_suffix)',
       'type': 'static_library',
       'sources': [
         '../virtual_driver_switches.cc',
         '../virtual_driver_switches.h',
         'virtual_driver_consts.cc',
         'virtual_driver_consts.h',
         'virtual_driver_helpers.cc',
         'virtual_driver_helpers.h',
-        ],
+      ],
     },
     {
       'target_name': 'gcp_portmon_lib<(virtual_driver_suffix)',
       'type': 'static_library',
       'sources': [
         'port_monitor/port_monitor.cc',
         'port_monitor/port_monitor.h',
       ],
       'dependencies': [
         'virtual_driver_lib<(virtual_driver_suffix)',
       ],
     },
     {
       'target_name': 'gcp_portmon<(virtual_driver_suffix)',
       'type': 'loadable_module',
       'sources': [
+        'port_monitor/port_monitor.def',
         'port_monitor/port_monitor_dll.cc',
         'virtual_driver_common_resources.rc',
       ],
       'dependencies': [
         'gcp_portmon_lib<(virtual_driver_suffix)',
       ],
     },
   ],
 }