Remove the system menu display settings row

ash/test/test_system_tray_delegate.cc

Index: ash/test/test_system_tray_delegate.cc
diff --git a/ash/test/test_system_tray_delegate.cc b/ash/test/test_system_tray_delegate.cc
index 1ffe01a306d86b80bcf4665b0c0cb2b25db64440..0b92b3d237bce9823bc7ecb297433147292d15c0 100644
--- a/ash/test/test_system_tray_delegate.cc
+++ b/ash/test/test_system_tray_delegate.cc
@@ -15,7 +15,6 @@
 
 #if defined(OS_CHROMEOS)
 #include "ash/system/chromeos/rotation/tray_rotation_lock.h"
-#include "ash/system/chromeos/tray_display.h"
 #include "base/memory/ptr_util.h"
 #else
 #include "ash/common/system/tray/system_tray_item.h"
@@ -124,15 +123,6 @@ void TestSystemTrayDelegate::SignOut() {
   base::MessageLoop::current()->QuitWhenIdle();
 }
 
-std::unique_ptr<SystemTrayItem> TestSystemTrayDelegate::CreateDisplayTrayItem(
-    SystemTray* tray) {
-#if defined(OS_CHROMEOS)
-  return base::MakeUnique<TrayDisplay>(tray);
-#else
-  return nullptr;
-#endif
-}
-
 std::unique_ptr<SystemTrayItem>
 TestSystemTrayDelegate::CreateRotationLockTrayItem(SystemTray* tray) {
 #if defined(OS_CHROMEOS)