I have Chrome on my machine set to open all tabs it had open the last time I used it.

Sometimes (quite often, it seems, although less than half the time) it completely fails, so I have to manually reopen closed tabs. Okay, whatever,
But sometimes the list of recently closed tabs gets removed/erased/expunged/truncated/whatever, and I'm unable to recover them. I'm sure this information is saved somewhere on my machine (and since I have Time Machine running, I'd hope I can recover it if it has been overwritten).
Where is this information stored?
To be clear: I'm not asking how to open recently closed tabs, I'm asking how to restore the list when it has gone away.
Last Tabs. – Oliver Salzburg♦ Jun 21 '13 at 0:48~/Library/Application\ Support/Google/Chrome\ Canary/Default/Last\ Tabs– iconoclast Jun 21 '13 at 1:41