Adds imageWriterPrivate support for Windows

chrome/chrome.gyp

 # 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,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 250 matching lines @@
             '../third_party/libxml/libxml.gyp:libxml',
             'common',
             '<(DEPTH)/chrome/chrome_resources.gyp:chrome_resources',
             '<(DEPTH)/chrome/chrome_resources.gyp:chrome_strings',
           ],
           'sources': [
             'utility/chrome_content_utility_client.cc',
             'utility/chrome_content_utility_client.h',
             'utility/extensions/unpacker.cc',
             'utility/extensions/unpacker.h',
+            'utility/image_writer/error_messages.cc',
+            'utility/image_writer/error_messages.h',
+            'utility/image_writer/image_writer.cc',
+            'utility/image_writer/image_writer.h',
+            'utility/image_writer/image_writer_handler.cc',
+            'utility/image_writer/image_writer_handler.h',
             'utility/importer/bookmark_html_reader.cc',
             'utility/importer/bookmark_html_reader.h',
             'utility/importer/bookmarks_file_importer.cc',
             'utility/importer/bookmarks_file_importer.h',
             'utility/importer/external_process_importer_bridge.cc',
             'utility/importer/external_process_importer_bridge.h',
             'utility/importer/favicon_reencode.cc',
             'utility/importer/favicon_reencode.h',
             'utility/importer/firefox_importer.cc',
             'utility/importer/firefox_importer.h',
@@ skipping 834 matching lines @@
               'sources': [
                 'service/cloud_print/print_system_dummy.cc',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }