Fix bugs in the display notification

ash/system/chromeos/screen_layout_observer.h

 // 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.
 
 #ifndef ASH_SYSTEM_CHROMEOS_SCREEN_LAYOUT_OBSERVER_H_
 #define ASH_SYSTEM_CHROMEOS_SCREEN_LAYOUT_OBSERVER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 42 matching lines @@
   bool GetDisplayMessageForNotification(const DisplayInfoMap& old_info,
                                         base::string16* message_out,
                                         base::string16* additional_message_out);
 
   // Creates or updates the display notification.
   void CreateOrUpdateNotification(const base::string16& message,
                                   const base::string16& additional_message);
 
   DisplayInfoMap display_info_;
 
+  bool old_is_in_mirrored_mode_ = false;
+  bool current_is_in_mirrored_mode_ = false;
+
+  bool old_is_in_unified_mode_ = false;
+  bool current_is_in_unified_mode_ = false;

[oshima, 2017/01/24 17:49:42]

can you use state instead of bools?

[afakhry, 2017/01/24 22:13:22]

Done.

+
   bool show_notifications_for_testing = true;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenLayoutObserver);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_SCREEN_LAYOUT_OBSERVER_H_