chromeos: wireup more display management for mushrome

ash/system/screen_layout_observer.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/system/screen_layout_observer.h"
 
 #include <memory>
 #include <utility>
 #include <vector>
 
@@ skipping 340 matching lines @@
     current_display_mode_ = DisplayMode::UNIFIED;
   else if (IsDockedModeEnabled())
     current_display_mode_ = DisplayMode::DOCKED;
   else if (GetDisplayManager()->GetNumDisplays() > 2)
     current_display_mode_ = DisplayMode::EXTENDED_3_PLUS;
   else if (GetDisplayManager()->GetNumDisplays() == 2)
     current_display_mode_ = DisplayMode::EXTENDED_2;
   else
     current_display_mode_ = DisplayMode::SINGLE;
 
-  if (!show_notifications_for_testing)
+  if (!show_notifications_for_testing_)
     return;
 
   base::string16 message;
   base::string16 additional_message;
   if (GetDisplayMessageForNotification(old_info, &message, &additional_message))
     CreateOrUpdateNotification(message, additional_message);
 }
 
 bool ScreenLayoutObserver::GetExitMirrorModeMessage(
     base::string16* out_message,
@@ skipping 22 matching lines @@
       return true;
 
     default:
       // Mirror mode was turned off; other messages should be shown e.g.
       // extended mode is on, ... etc.
       return false;
   }
 }
 
 }  // namespace ash