Adds imageWriterPrivate support for Windows

chrome/chrome_tests.gypi

 # Copyright 2013 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' : {
     'chromedriver_unittest_sources': [
       'test/chromedriver/capabilities_unittest.cc',
       'test/chromedriver/chrome/chrome_finder_unittest.cc',
       'test/chromedriver/chrome/console_logger_unittest.cc',
       'test/chromedriver/chrome/device_manager_unittest.cc',
@@ skipping 1624 matching lines @@
         'test/data/webui/ntp4.js',
         'test/data/webui/ntp4_browsertest.cc',
         'test/data/webui/ntp4_browsertest.h',
         'test/data/webui/print_preview.cc',
         'test/data/webui/print_preview.h',
         'test/data/webui/print_preview.js',
         'test/data/webui/sandboxstatus_browsertest.js',
         'test/data/webui/webui_resource_browsertest.cc',
         'test/gpu/gpu_feature_browsertest.cc',
         'test/gpu/webgl_infobar_browsertest.cc',
+        'test/image_writer/temp_file_bundle.cc',
+        'test/image_writer/temp_file_bundle.h',
         'test/ppapi/ppapi_browsertest.cc',
         'test/remoting/auth_browsertest.cc',
         'test/remoting/launch_browsertest.cc',
         'test/remoting/key_code_conv.cc',
         'test/remoting/key_code_conv.h',
         'test/remoting/key_code_map.h',
         'test/remoting/me2me_browsertest.cc',
         'test/remoting/page_load_notification_observer.cc',
         'test/remoting/page_load_notification_observer.h',
         'test/remoting/remote_desktop_browsertest.cc',
@@ skipping 1571 matching lines @@
             'utility',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
           ],
         }]
     }],
   ],  # 'conditions'
 }