Updates the list of display info in TrayDisplay even if notification is prevented.

ash/system/chromeos/tray_display_unittest.cc

 // Copyright 2013 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/system/chromeos/tray_display.h"
 
 #include "ash/display/display_manager.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
@@ skipping 419 matching lines @@
       l10n_util::GetStringUTF16(
           IDS_ASH_STATUS_TRAY_DISPLAY_EXTENDED_NO_INTERNAL),
       GetDisplayNotificationText());
 
   // Back to the single display. It SHOULD remove the notification since the
   // information is stale.
   UpdateDisplay("400x400");
   EXPECT_TRUE(GetDisplayNotificationText().empty());
 }
 
+TEST_F(TrayDisplayTest, UpdateAfterSuppressDisplayNotification) {
+  UpdateDisplay("400x400,200x200");
+
+  test::TestSystemTrayDelegate* tray_delegate =
+      static_cast<test::TestSystemTrayDelegate*>(
+          Shell::GetInstance()->system_tray_delegate());
+  tray_delegate->set_should_show_display_notification(true);
+
+  // rotate the second.
+  UpdateDisplay("400x400,200x200/r");
+  EXPECT_EQ(
+      l10n_util::GetStringFUTF16(
+          IDS_ASH_STATUS_TRAY_DISPLAY_ROTATED,
+          GetSecondDisplayName(),
+          l10n_util::GetStringUTF16(
+              IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_90)),
+      GetDisplayNotificationText());
+}
+
 }  // namespace internal
 }  // namespace ash