Use chromeos accelerometer reader and support only lid accelerometer.

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 70 matching lines @@
         'resource_manager/memory_pressure_notifier.h',
         'resource_manager/public/resource_manager.h',
         'resource_manager/public/resource_manager_delegate.h',
         'resource_manager/resource_manager_impl.cc',
         'screen/public/screen_manager.h',
         'screen/screen_accelerator_handler.cc',
         'screen/screen_accelerator_handler.h',
         'screen/screen_manager_impl.cc',
         'system/background_controller.cc',
         'system/background_controller.h',
-        'system/device_socket_listener.cc',
-        'system/device_socket_listener.h',
         'system/network_selector.cc',
         'system/network_selector.h',
         'system/orientation_controller.cc',
         'system/orientation_controller.h',
         'system/power_button_controller.cc',
         'system/power_button_controller.h',
         'system/status_icon_container_view.cc',
         'system/status_icon_container_view.h',
         'system/time_view.cc',
         'system/time_view.h',
@@ skipping 161 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',
       ],
     }
   ],
 }