| <!DOCTYPE html> | |
| <!-- | |
| Copyright 2020 The Chromium Authors | |
| Use of this source code is governed by a BSD-style license that can be | |
| found in the LICENSE file. | |
| --> | |
| <html> | |
| <head><title>unset</title></head> | |
| <body> | |
| <script> | |
| document.title = document.visibilityState; | |
| document.addEventListener('visibilitychange', function(e) { | |
| document.title = document.visibilityState; | |
| }); | |
| </script> | |
| </body> | |
| </html> |