UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.75 Safari/537.36

Steps to reproduce the problem:
1. Go to http://sendingrending.xyz/
fallinline.php?city=TR&clickid=w8HBLGR8BGJR1SH1157TCV3E
2. In the confirm dialog, repeatedly click cancel until you can block it.
3. When trapped in endless fullscreen locks, try exiting with [ESC].
4. Close tab with [Ctrl] + [W].

What is the expected behavior?
After several attempts to escape to escape fullscreen lock, Chrome should provide user an option to block fullscreen lock in this session.

What went wrong?
Trapped in endless fullscreen locks until closing the tab.

Did this work before? No 

Chrome version: 55.0.2883.75  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 23.0 r0

After Chrome imposing more restrictions on confirm dialog [1], we see a trend that malware now found their new love with fullscreen lock. It is not very hard to close the tab directly, but many users might not know how to react.

Probably should consider implementing similar feature for pointer lock as well.

[1]: https://developers.google.com/web/updates/2016/04/chrome-51-deprecations