Is this an integrated crown race?

Probably not, and it doesn't look like it. Integrated crown races on road bikes are usually found on all-carbon forks and they were also nascent then if they existed at all. Also, the part indicated by the arrow looks an awful lot like the split of a crown race that slides on:

If it's not a slip on type and is simply a difficult to remove one with no overhang, there are shop tools that can do that. And as mentioned in the comments, if all you need is bearings, hopefully you can get replacements and not have to mess with the crown race or replacing the whole headset.