chromeos: Fix shutdown crash in status area teardown on stylus devices

ash/focus_cycler_unittest.cc

Index: ash/focus_cycler_unittest.cc
diff --git a/ash/focus_cycler_unittest.cc b/ash/focus_cycler_unittest.cc
index 078093967c7794fd272425007cd8f08567fb91b9..1c42b81e39e4ffed78138e69d1c2e0db99c65468 100644
--- a/ash/focus_cycler_unittest.cc
+++ b/ash/focus_cycler_unittest.cc
@@ -13,7 +13,6 @@
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/wm_shell.h"
 #include "ash/test/ash_test_base.h"
-#include "ash/test/status_area_widget_test_helper.h"
 #include "ash/wm/window_util.h"
 #include "ui/aura/test/test_windows.h"
 #include "ui/aura/window.h"
@@ -79,12 +78,8 @@ class FocusCyclerTest : public AshTestBase {
   }
 
  protected:
-  // Setup the system tray using StatusAreaWidgetTestHelper and focus_cycler.
+  // Setup the system tray focus cycler.
   void SetUpTrayFocusCycle() {
-    StatusAreaWidget* widget =
-        StatusAreaWidgetTestHelper::GetStatusAreaWidget();
-    widget->CreateTrayViews();
-    widget->Show();
     views::Widget* system_tray_widget = GetPrimarySystemTray()->GetWidget();
     ASSERT_TRUE(system_tray_widget);
     focus_cycler_->AddWidget(system_tray_widget);