Chrome on Linux supports tab-redordering using keyboard shortcuts. On Mac and on Windows the same cannot be said. So made an extension.
You get it natively on Linux: ctrl-shift-pgup moves the current tab left, ctrl-shift-pgdn moves it right. Other Operating Systems don't benefit from this as it's seen as typical GTK behaviour and therefore there is no intention to migrate this functionality to Windows or Mac versions. Booooo I say. It's inconsistent, annoying and above all, means I have to take my hands off my keyboard and use the mouse. Ugh.
If you sync your extensions and find this installed on Chrome on your Linux box, it will do nothing as keyboard tab-reordering is supported natively. Try it out!