Convert TrayAccessibility to wm common types

ui/chromeos/ui_chromeos.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 54 matching lines @@
         '../wm/wm.gyp:wm',
         'ui_chromeos_resources',
         'ui_chromeos_strings',
       ],
       'defines': [
         'UI_CHROMEOS_IMPLEMENTATION',
       ],
       'sources': [
         'accelerometer/accelerometer_util.cc',
         'accelerometer/accelerometer_util.h',
-        'accessibility_types.h',
         'ime/candidate_view.cc',
         'ime/candidate_view.h',
         'ime/candidate_window_view.cc',
         'ime/candidate_window_view.h',
         'ime/infolist_window.cc',
         'ime/infolist_window.h',
         'ime/input_method_menu_item.cc',
         'ime/input_method_menu_item.h',
         'ime/input_method_menu_manager.cc',
         'ime/input_method_menu_manager.h',
@@ skipping 44 matching lines @@
         '../chromeos/ime/candidate_window_view_unittest.cc',
         '../chromeos/ime/input_method_menu_item_unittest.cc',
         '../chromeos/ime/input_method_menu_manager_unittest.cc',
         '../chromeos/network/network_state_notifier_unittest.cc',
         '../chromeos/touch_exploration_controller_unittest.cc',
         'run_all_unittests.cc',
       ],
     },  # target_name: ui_chromeos_unittests
   ],
 }