Adds imageWriterPrivate support for Windows

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1917 matching lines @@
         'test/base/menu_model_test.cc',
         'test/base/menu_model_test.h',
         'test/base/v8_unit_test.cc',
         'test/base/v8_unit_test.h',
         'test/data/resource.rc',
         'test/data/unit/framework_unittest.gtestjs',
         'test/logging/win/mof_data_parser_unittest.cc',
         'tools/convert_dict/convert_dict_unittest.cc',
         'tools/profile_reset/jtl_compiler_unittest.cc',
         'tools/profile_reset/jtl_parser_unittest.cc',
+        'utility/image_writer/image_writer_unittest.cc',
         'utility/cloud_print/pwg_encoder_unittest.cc',
         'utility/extensions/unpacker_unittest.cc',
         'utility/importer/bookmark_html_reader_unittest.cc',
         'utility/importer/bookmarks_file_importer_unittest.cc',
         'utility/importer/firefox_importer_unittest.cc',
         'utility/importer/firefox_importer_unittest_messages_internal.h',
         'utility/importer/firefox_importer_unittest_utils.h',
         'utility/importer/firefox_importer_unittest_utils_mac.cc',
         'utility/importer/safari_importer_unittest.mm',
 
@@ skipping 980 matching lines @@
             'browser/ui/app_list/test/fake_profile_store.h',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
             'browser/ui/views/app_list/linux/app_list_linux_unittest.cc',
             'browser/ui/views/app_list/win/app_list_win_unittest.cc',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }