3.5 – What happens when a non-cleric gains a domain?

I’m familiar with what happens when a non-cleric acquires a domain (spell-wise – they don’t get domain slots but can add the domain spell to their list and may only cast that spell 1/day). But what level do they count regarding domain abilities? EG:

For a total time per day of 1 round per cleric level you possess, you can act normally regardless of magical effects that impede movement as if you were affected by the spell freedom of movement. This effect occurs automatically as soon as it applies, lasts until it runs out or is no longer needed, and can operate multiple times per day (up to the total daily limit of rounds).

So, hypothetically let’s say a 12th level druid/wizard/whatever gains this domain (through a prestige class) how many rounds free movement do they get?