mash: Move StatusTray and StatusAreaWidget to //ash/common

ash/system/web_notification/web_notification_tray_unittest.cc

 // 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.
 
 #include "ash/common/system/web_notification/web_notification_tray.h"
 
 #include <utility>
 #include <vector>
 
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/shell_window_ids.h"
+#include "ash/common/system/status_area_widget.h"
+#include "ash/common/system/tray/system_tray.h"
 #include "ash/common/system/tray/system_tray_item.h"
 #include "ash/common/system/web_notification/ash_popup_alignment_delegate.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_root_window_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
-#include "ash/system/status_area_widget.h"
-#include "ash/system/tray/system_tray.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/status_area_widget_test_helper.h"
 #include "ash/test/test_system_tray_delegate.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/events/base_event_utils.h"
 #include "ui/events/event.h"
 #include "ui/events/test/event_generator.h"
@@ skipping 501 matching lines @@
       ui::ET_TOUCH_RELEASED, out_of_bounds, touch_id,
       move.time_stamp() + base::TimeDelta::FromMilliseconds(50));
   generator.Dispatch(&release);
   EXPECT_FALSE(tray->draw_background_as_active());
   EXPECT_FALSE(tray->IsMessageCenterBubbleVisible());
 }
 
 #endif  // OS_CHROMEOS
 
 }  // namespace ash