Adding functions to the window_list_provider for accessing the activities window list

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 89 matching lines @@
         'system/status_icon_container_view.h',
         'system/time_view.cc',
         'system/time_view.h',
         'system/public/system_ui.h',
         'system/system_ui_impl.cc',
         'wm/bezel_controller.cc',
         'wm/bezel_controller.h',
         'wm/overview_toolbar.cc',
         'wm/overview_toolbar.h',
         'wm/public/window_list_provider.h',
+        'wm/public/window_list_provider_observer.h',
         'wm/public/window_manager.h',
         'wm/public/window_manager_observer.h',
         'wm/split_view_controller.cc',
         'wm/split_view_controller.h',
         'wm/title_drag_controller.cc',
         'wm/title_drag_controller.h',
         'wm/window_list_provider_impl.cc',
         'wm/window_list_provider_impl.h',
         'wm/window_manager_impl.cc',
         'wm/window_overview_mode.cc',
@@ skipping 133 matching lines @@
         'screen/screen_manager_unittest.cc',
         'test/athena_unittests.cc',
         'wm/split_view_controller_unittest.cc',
         'wm/window_list_provider_impl_unittest.cc',
         'wm/window_manager_unittest.cc',
       ],
     }
   ],
 }