mash: Move TrayTracing to //ash/common/system/chromeos

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 108 matching lines @@
       'common/system/chromeos/power/power_status.h',
       'common/system/chromeos/power/power_status_view.cc',
       'common/system/chromeos/power/power_status_view.h',
       'common/system/chromeos/power/tray_power.cc',
       'common/system/chromeos/power/tray_power.h',
       'common/system/chromeos/settings/tray_settings.cc',
       'common/system/chromeos/settings/tray_settings.h',
       'common/system/chromeos/shutdown_policy_observer.h',
       'common/system/chromeos/system_clock_observer.cc',
       'common/system/chromeos/system_clock_observer.h',
+      'common/system/chromeos/tray_tracing.cc',
+      'common/system/chromeos/tray_tracing.h',
       'common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h',
       'common/system/date/clock_observer.h',
       'common/system/date/date_default_view.cc',
       'common/system/date/date_default_view.h',
       'common/system/date/date_view.cc',
       'common/system/date/date_view.h',
       'common/system/date/tray_date.cc',
       'common/system/date/tray_date.h',
       'common/system/ime/ime_observer.h',
       'common/system/ime/tray_ime_chromeos.cc',
@@ skipping 448 matching lines @@
       'system/chromeos/session/session_length_limit_observer.h',
       'system/chromeos/session/tray_session_length_limit.cc',
       'system/chromeos/session/tray_session_length_limit.h',
       'system/chromeos/supervised/custodian_info_tray_observer.h',
       'system/chromeos/supervised/tray_supervised_user.cc',
       'system/chromeos/supervised/tray_supervised_user.h',
       'system/chromeos/tray_caps_lock.cc',
       'system/chromeos/tray_caps_lock.h',
       'system/chromeos/tray_display.cc',
       'system/chromeos/tray_display.h',
-      'system/chromeos/tray_tracing.cc',
-      'system/chromeos/tray_tracing.h',
       'system/chromeos/virtual_keyboard/virtual_keyboard_tray.cc',
       'system/chromeos/virtual_keyboard/virtual_keyboard_tray.h',
       'system/keyboard_brightness/keyboard_brightness_control_delegate.h',
       'system/overview/overview_button_tray.cc',
       'system/overview/overview_button_tray.h',
       'system/status_area_widget.cc',
       'system/status_area_widget.h',
       'system/status_area_widget_delegate.cc',
       'system/status_area_widget_delegate.h',
       'system/toast/toast_data.cc',
@@ skipping 846 matching lines @@
                   '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
                 ],
               }
             ],
           ],
         },
       ],
     }],
   ],
 }