I cleared my cookies yesterday, and lost all my saved comments. Is there any way to get them back, other than finding my Chrome cookies file in a backup?

I cleared my cookies yesterday, and lost all my saved comments. Is there any way to get them back?

I just tried restoring my cookies from a backup, it didn't help. Then I tried restoring my entire ~/Library/Application Defaults/Chrome/Default folder, it seemed to cause other problems (Chrome warned that it didn't shut down cleanly), and also didn't restore my auto-comments.

Where are the auto comments stored, maybe I can find that and manually copy them.