I have been trying to setup Chrome Sync for my MacBook Pro and home desktop for a long time, but never be able to get it working on my desktop at home. The setup kept at the “Setting Up” screen forever.
After googling I found out that some people had the same issue, and it was caused by corrupted AutoFill data. All I needed to do was to untick “AutoFill” in the “Configure Sync” page.
Now I can get all my data synced, and I don’t care about AutoFill anyway.