他のタブをすべて閉じます

あなたはアイテムは右クリックメニューまたはAltキー+ Shiftキー+ Wを押して、ツールバーのボタンで他のタブをすべて閉じることを可能にします。

To replace the item recently removed from the right-click menu on tabs, this extension just adds a Close Other Tabs item to the standard right-click context menu. It doesn't track your browsing, send you personal data to any remote servers or rewrite any of the links on the pages you visit. It adds a single context menu item and nothing else. The source is available on GitHub if you want to check this for yourself. The item is on the right click context menu you get when clicking on the page and not when you click on the tab header because Extensions cannot add items to the tab menu.