Add shadow/corner radius to notifications (toasts and in-center).

ui/message_center/views/message_view_factory.cc

 // Copyright 2016 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 "ui/message_center/views/message_view_factory.h"
 
 #include "ui/message_center/notification_types.h"
 #include "ui/message_center/views/custom_notification_view.h"
 #include "ui/message_center/views/notification_view.h"
 
@@ skipping 25 matching lines @@
       // if an application is running on an older version of this code that
       // doesn't have the requested kind of notification template), we'll fall
       // back to a notification instance that will provide at least basic
       // functionality.
       LOG(WARNING) << "Unable to fulfill request for unrecognized "
                    << "notification type " << notification.type() << ". "
                    << "Falling back to simple notification type.";
       notification_view = new NotificationView(controller, notification);
   }
 
-#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
-  // Don't create shadows for notification toasts on linux wih aura.
+#if defined(OS_LINUX)
+  // Don't create shadows for notification toasts on Linux or CrOS.
   if (top_level)
     return notification_view;
 #endif
 
 #if defined(OS_WIN)
   // Don't create shadows for notifications on Windows under classic theme.
   if (top_level && !ui::win::IsAeroGlassEnabled()) {
     return notification_view;
   }
 #endif  // OS_WIN
 
   notification_view->CreateShadowBorder();
   return notification_view;
 }
 
 }  // namespace message_center