Make the minimized home card not overlap activities on Athena

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 47 matching lines @@
         'home/public/app_model_builder.h',
         'home/public/home_card.h',
         'input/accelerator_manager_impl.cc',
         'input/accelerator_manager_impl.h',
         'input/input_manager_impl.cc',
         'input/public/accelerator_manager.h',
         'input/public/input_manager.h',
         'screen/background_controller.cc',
         'screen/background_controller.h',
         'screen/public/screen_manager.h',
+        'screen/public/screen_manager_delegate.h',
         'screen/screen_accelerator_handler.cc',
         'screen/screen_accelerator_handler.h',
         'screen/screen_manager_impl.cc',
         'system/device_socket_listener.cc',
         'system/device_socket_listener.h',
         'system/orientation_controller.cc',
         'system/orientation_controller.h',
         'system/power_button_controller.cc',
         'system/power_button_controller.h',
         'system/public/system_ui.h', 
@@ skipping 76 matching lines @@
         'test/athena_test_base.cc',
         'test/athena_test_base.h',
         'test/athena_test_helper.cc',
         'test/athena_test_helper.h',
         'test/sample_activity.cc',
         'test/sample_activity.h',
         'test/sample_activity_factory.cc',
         'test/sample_activity_factory.h',
         'test/test_app_model_builder.cc',
         'test/test_app_model_builder.h',
+        'test/test_screen_manager_delegate.cc',
+        'test/test_screen_manager_delegate.h',
       ],
     },
     {
       'target_name': 'athena_unittests',
       'type': 'executable',
       'dependencies': [
         '../skia/skia.gyp:skia',
         '../testing/gtest.gyp:gtest',
         'athena_lib',
         'athena_test_support',
         'main/athena_main.gyp:athena_main_lib',
         'resources/athena_resources.gyp:athena_pak',
       ],
       'sources': [
         'test/athena_unittests.cc',
         'activity/activity_manager_unittest.cc',
         'home/home_card_unittest.cc',
         'input/accelerator_manager_unittest.cc',
         'screen/screen_manager_unittest.cc',
         'wm/split_view_controller_unittest.cc',
         'wm/window_list_provider_impl_unittest.cc',
         'wm/window_manager_unittest.cc',
       ],
     }
   ],
 }