There's a fantastic restaurant nearby that doesn't have high chairs. It's a white-tablecloth place with heavy cutlery and fancy plates, and they do a FABULOUS breakfast that's cheaper than any other place around. Fresh ingredients, good coffee, good price--we go every weekend.
At first, the slightly snooty French owner would greet us (with DD in tow) with a frown, look around his mostly empty restaurant, and sigh. It looked like he was always wondering where to seat us. It was so annoying! So we'd suggest a place in a corner, out of the way, and put DD in her stroller while we ate. If she got fussy, as babies sometimes do, we'd pick her up or take her outside for a bit or whatever.
These days, the owner greets us with a smile and even looks at DD once in a while! Progress! Still no high chairs, but I think he's come to realize kids aren't so bad. And we still enjoy our meal. Plus it's way better that the crappy, expensive place with high chairs up the street that plays BOOMING DANCE MUSIC. At 9 in the morning! Yeesh.
ETA: We bought a travel high-chair, made of cloth, that's easy to carry and set up in a restaurant. Haven't used it to eat out yet but love it when visiting family.