Parse messages.json in ExtensionUnpacker (like we do for manifest)....

chrome/chrome.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.
 
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
@@ skipping 4634 matching lines @@
         'browser/download/save_package_unittest.cc',
         'browser/encoding_menu_controller_unittest.cc',
         'browser/extensions/convert_user_script_unittest.cc',
         'browser/extensions/extension_file_util_unittest.cc',
         'browser/extensions/extension_messages_unittest.cc',
         'browser/extensions/extension_process_manager_unittest.cc',
         'browser/extensions/extension_ui_unittest.cc',
         'browser/extensions/extension_updater_unittest.cc',
         'browser/extensions/extensions_service_unittest.cc',
         'browser/extensions/file_reader_unittest.cc',
+        'browser/extensions/sandboxed_extension_unpacker_unittest.cc',
         'browser/extensions/user_script_listener_unittest.cc',
         'browser/extensions/user_script_master_unittest.cc',
         'browser/find_backend_unittest.cc',
         'browser/global_keyboard_shortcuts_mac_unittest.cc',
         'browser/google_url_tracker_unittest.cc',
         'browser/google_update_settings_posix_unittest.cc',
         'browser/gtk/bookmark_bar_gtk_unittest.cc',
         'browser/gtk/bookmark_editor_gtk_unittest.cc',
         'browser/gtk/gtk_theme_provider_unittest.cc',
         'browser/gtk/go_button_gtk_unittest.cc',
@@ skipping 104 matching lines @@
         'browser/window_sizer_unittest.cc',
         'common/bzip2_unittest.cc',
         'common/child_process_logging_mac_unittest.mm',
         'common/chrome_plugin_unittest.cc',
         'common/common_param_traits_unittest.cc',
         'common/extensions/extension_resource_unittest.cc',
         'common/extensions/extension_unittest.cc',
         'common/extensions/extension_action_unittest.cc',
         'common/extensions/extension_l10n_util_unittest.cc',
         'common/extensions/extension_message_bundle_unittest.cc',
+        'common/extensions/extension_unpacker_unittest.cc',
         'common/extensions/update_manifest_unittest.cc',
         'common/extensions/url_pattern_unittest.cc',
         'common/extensions/user_script_unittest.cc',
         'common/important_file_writer_unittest.cc',
         'common/json_value_serializer_unittest.cc',
         'common/mru_cache_unittest.cc',
         'common/net/url_util_unittest.cc',
         'common/notification_service_unittest.cc',
         'common/pref_member_unittest.cc',
         'common/pref_service_unittest.cc',
@@ skipping 2264 matching lines @@
       ]
     }],
   ],  # 'conditions'
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: