Refer:
https://addons.mozilla.org/firefox/addon/hide-the-titlebar/
https://addons.mozilla.org/firefox/addon/minimize-the-window/
https://addons.mozilla.org/firefox/addon/maximize-the-window/

Install

• License: MIT License
• Weekly downloads: 8
• Average daily users: 104
• Rating: 4.5/5 of 26 ratings
• Created: 2017-08-29 09:49:54
• Last updated: 2017-11-17 05:30:39
• Homepage:
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/close-the-window/
• API: close-window-button@nanpuyue.com