Introduce system_info as an independent container.

athena/athena.gyp

 # Copyright 2014 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,
   },
   'targets': [
     {
@@ skipping 82 matching lines @@
         'system/orientation_controller.cc',
         'system/orientation_controller.h',
         'system/shutdown_dialog.cc',
         'system/shutdown_dialog.h',
         'system/status_icon_container_view.cc',
         'system/status_icon_container_view.h',
         'system/time_view.cc',
         'system/time_view.h',
         'system/public/system_ui.h',
         'system/system_ui_impl.cc',
+        'util/athena_constants.cc',
+        'util/athena_constants.h',
         'util/container_priorities.h',
         'util/drag_handle.cc',
         'util/drag_handle.h',
         'util/fill_layout_manager.cc',
         'util/fill_layout_manager.h',
         'util/switches.cc',
         'util/switches.h',
         'wm/overview_toolbar.cc',
         'wm/overview_toolbar.h',
         'wm/public/window_list_provider.h',
@@ skipping 242 matching lines @@
         'util/drag_handle_unittest.cc',
         'util/fill_layout_manager_unittest.cc',
         'wm/split_view_controller_unittest.cc',
         'wm/window_list_provider_impl_unittest.cc',
         'wm/window_manager_unittest.cc',
       ],
     }
   ],
 }