mash: Move SystemTrayDelegate and dependencies to //ash/common

ash/system/chromeos/rotation/tray_rotation_lock_unittest.cc

 // 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.
 
 #include "ash/system/chromeos/rotation/tray_rotation_lock.h"
 
 #include <memory>
 
 #include "ash/ash_switches.h"
+#include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/screen_orientation_controller_chromeos.h"
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray.h"
-#include "ash/system/tray/system_tray_delegate.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/status_area_widget_test_helper.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "base/command_line.h"
 #include "base/time/time.h"
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
 #include "ui/views/view.h"
 
 namespace ash {
@@ skipping 242 matching lines @@
       ->EnableMaximizeModeWindowManager(true);
   DestroyTrayView();
   Shell::GetInstance()->screen_orientation_controller()->SetRotationLocked(
       true);
   Shell::GetInstance()
       ->maximize_mode_controller()
       ->EnableMaximizeModeWindowManager(false);
 }
 
 }  // namespace ash