athena: Introduce ActivityView.

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 30 matching lines @@
         'activity/activity_manager_impl.cc',
         'activity/activity_manager_impl.h',
         'activity/activity_frame_view.cc',
         'activity/activity_frame_view.h',
         'activity/activity_widget_delegate.cc',
         'activity/activity_widget_delegate.h',
         'activity/public/activity.h',
         'activity/public/activity_factory.h',
         'activity/public/activity_manager.h',
         'activity/public/activity_manager_observer.h',
+        'activity/public/activity_view.h',
         'activity/public/activity_view_model.h',
         'athena_export.h',
         'env/athena_env_impl.cc',
         'env/public/athena_env.h',
         'home/app_list_view_delegate.cc',
         'home/app_list_view_delegate.h',
         'home/athena_start_page_view.cc',
         'home/athena_start_page_view.h',
         'home/home_card_constants.cc',
         'home/home_card_constants.h',
@@ skipping 248 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',
       ],
     }
   ],
 }