mash: Move user_switch_util to chrome.

ash/ash.gyp

 # Copyright (c) 2012 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,
     # These files lists are shared with the GN build.
     'ash_sources': [
       'accelerators/accelerator_commands.cc',
@@ skipping 610 matching lines @@
       'shell_factory.h',
       'shell_init_params.cc',
       'shell_init_params.h',
       'snap_to_pixel_layout_manager.cc',
       'snap_to_pixel_layout_manager.h',
       'sticky_keys/sticky_keys_controller.cc',
       'sticky_keys/sticky_keys_controller.h',
       'sticky_keys/sticky_keys_overlay.cc',
       'sticky_keys/sticky_keys_overlay.h',
       'sticky_keys/sticky_keys_state.h',
-      'system/chromeos/multi_user/user_switch_util.cc',
-      'system/chromeos/multi_user/user_switch_util.h',
       'system/chromeos/power/power_event_observer.cc',
       'system/chromeos/power/power_event_observer.h',
       'system/chromeos/power/video_activity_notifier.cc',
       'system/chromeos/power/video_activity_notifier.h',
       'system/chromeos/rotation/tray_rotation_lock.cc',
       'system/chromeos/rotation/tray_rotation_lock.h',
       'system/chromeos/tray_display.cc',
       'system/chromeos/tray_display.h',
       'system/status_area_widget.cc',
       'system/status_area_widget.h',
@@ skipping 315 matching lines @@
       'shelf/shelf_navigator_unittest.cc',
       'shelf/shelf_tooltip_manager_unittest.cc',
       'shelf/shelf_unittest.cc',
       'shelf/shelf_view_unittest.cc',
       'shelf/shelf_widget_unittest.cc',
       'shelf/shelf_window_watcher_unittest.cc',
       'shell_unittest.cc',
       'sticky_keys/sticky_keys_overlay_unittest.cc',
       'sticky_keys/sticky_keys_unittest.cc',
       'system/chromeos/media_security/multi_profile_media_tray_item_unittest.cc',
-      'system/chromeos/multi_user/user_switch_util_unittest.cc',
       'system/chromeos/power/power_event_observer_unittest.cc',
       'system/chromeos/power/video_activity_notifier_unittest.cc',
       'system/chromeos/rotation/tray_rotation_lock_unittest.cc',
       'system/chromeos/tray_display_unittest.cc',
       'system/overview/overview_button_tray_unittest.cc',
       'system/toast/toast_manager_unittest.cc',
       'system/tray/system_tray_unittest.cc',
       'system/web_notification/ash_popup_alignment_delegate_unittest.cc',
       'system/web_notification/web_notification_tray_unittest.cc',
       'test/ash_test_helper_unittest.cc',
@@ skipping 472 matching lines @@
                   '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
                 ],
               }
             ],
           ],
         },
       ],
     }],
   ],
 }