Revert "Reverting 23406" as it didn't break any tests....

webkit/default_plugin/default_plugin.gyp

 # Copyright (c) 2009 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.
 
 {
   'includes': [
     '../../build/common.gypi',
   ],
   'targets': [
   ],
   'conditions': [
     ['OS=="win"', {
       'targets': [
         {
           'target_name': 'default_plugin',
           'type': '<(library)',
           'dependencies': [
             '../../net/net.gyp:net_resources',
             '../../third_party/icu38/icu38.gyp:icui18n',
             '../../third_party/icu38/icu38.gyp:icuuc',
             '../../third_party/libxml/libxml.gyp:libxml',
             '../../third_party/npapi/npapi.gyp:npapi',
             '../activex_shim/activex_shim.gyp:activex_shim',
             '../webkit.gyp:webkit_resources',
             '../webkit.gyp:webkit_strings',
           ],
           'include_dirs': [
             '../..',
+            '../../chrome/third_party/wtl/include',
             # TODO(bradnelson): this should fall out of the dependencies.
             '<(SHARED_INTERMEDIATE_DIR)/webkit',
           ],
           'msvs_guid': '5916D37D-8C97-424F-A904-74E52594C2D6',
           'sources': [
             'activex_installer.cc',
             'activex_installer.h',
             'default_plugin.cc',
             'default_plugin_resources.h',
             'default_plugin_shared.h',
             'install_dialog.cc',
             'install_dialog.h',
             'plugin_database_handler.cc',
             'plugin_database_handler.h',
             'plugin_impl_win.cc',
             'plugin_impl_win.h',
             'plugin_install_job_monitor.cc',
             'plugin_install_job_monitor.h',
             'plugin_main.cc',
             'plugin_main.h',
           ],
           'link_settings': {
             'libraries': ['-lurlmon.lib'],
           },
         },
       ],
     },],
   ],
 }