ash: Remove broken display notification suppression when settings is open

ash/content/display/screen_orientation_controller_chromeos_unittest.cc

Index: ash/content/display/screen_orientation_controller_chromeos_unittest.cc
diff --git a/ash/content/display/screen_orientation_controller_chromeos_unittest.cc b/ash/content/display/screen_orientation_controller_chromeos_unittest.cc
index bb100838c996c24b32d10f643934056ef78134bc..1b76122599d8e82956ea9051a5e2e07901a697f8 100644
--- a/ash/content/display/screen_orientation_controller_chromeos_unittest.cc
+++ b/ash/content/display/screen_orientation_controller_chromeos_unittest.cc
@@ -14,6 +14,7 @@
 #include "ash/content/shell_content_state.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
+#include "ash/system/chromeos/screen_layout_observer.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/ash_test_environment_content.h"
 #include "ash/test/ash_test_helper.h"
@@ -420,8 +421,9 @@ TEST_F(ScreenOrientationControllerTest, RotationLockPreventsRotation) {
 // triggered by the accelerometer.
 TEST_F(ScreenOrientationControllerTest, BlockRotationNotifications) {
   EnableMaximizeMode(true);
-  test::TestSystemTrayDelegate* tray_delegate = GetSystemTrayDelegate();
-  tray_delegate->set_should_show_display_notification(true);
+  Shell::GetInstance()
+      ->screen_layout_observer()
+      ->set_show_notifications_for_testing(true);
   test::DisplayManagerTestApi(display_manager())
       .SetFirstDisplayAsInternalDisplay();