California Grill is fine for a toddler that is used to going out to dinner. We've been taking our kids out to eat literally since they were born. They are teen & pre-teen now, but they have always known how to behave in a restaurant (i.e. napkin on lap, stay in seat, don't stare at other people, use your indoor voice, etc.) I've had people give us "that look" when we've walked into restaurants & those same people would come over later & compliment our children.
They have goldfish for your 2 y/o to snack on & crayons to color with. It is quite loud in there with a lot of loud conversation going on, so if your child is babbling or giggling, that is just fine. They only thing I would recommend is like the other posters have stated, if your child becomes antsy & starts to cry, be prepared to leave. CG is a nice establishment where the meal is purposely dragged out, but check out a menu before you sit & ask to put your order in right away & maybe skip dessert and you should be out in less than 2 hours.