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I know about Xmarks and LastPass, but is there a free solution for password syncing between Android and Chrome?
Keepass is an option. You can set up the KeePassDroid app to use a password database that you keep synced with Dropbox (a good tutorial is available at AndroidPolice). Not very elegant, but it might be what you're looking for.
You might like to try http://phonemarks.blogspot.com/
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