ash: Remove broken display notification suppression when settings is open

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/shelf_layout_manager.h"
 #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_window.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_md_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/test/event_generator.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/message_center/message_center_style.h"
 #include "ui/message_center/message_center_tray.h"
 #include "ui/message_center/notification_list.h"
@@ skipping 227 matching lines @@
 }
 
 // Display notification is ChromeOS only.
 #if defined(OS_CHROMEOS)
 
 // Verifies if the notification appears on both displays when extended mode.
 TEST_P(WebNotificationTrayTest, PopupShownOnBothDisplays) {
   if (!SupportsMultipleDisplays())
     return;
 
-  // Enables to appear the notification for display changes.
-  test::TestSystemTrayDelegate* tray_delegate = GetSystemTrayDelegate();
-  tray_delegate->set_should_show_display_notification(true);
-
   UpdateDisplay("400x400,200x200");
   // UpdateDisplay() creates the display notifications, so popup is visible.
   EXPECT_TRUE(GetTray()->IsPopupVisible());
   WebNotificationTray* secondary_tray = GetSecondaryTray();
   ASSERT_TRUE(secondary_tray);
   EXPECT_TRUE(secondary_tray->IsPopupVisible());
 
   // Transition to mirroring and then back to extended display, which recreates
   // root window controller and shelf with having notifications. This code
   // verifies it doesn't cause crash and popups are still visible. See
@@ skipping 226 matching lines @@
   EXPECT_FALSE(tray->draw_background_as_active());
 
   generator.ReleaseTouch();
   EXPECT_FALSE(tray->draw_background_as_active());
   EXPECT_FALSE(tray->IsMessageCenterBubbleVisible());
 }
 
 #endif  // OS_CHROMEOS
 
 }  // namespace ash