A Gloom Chymist's Glooms do not count as Bombs for purposes of feats and Discoveries, however it does not mention other things, such as racial favored class bonuses. Do you think that Gloom Chymists would still gain things such as extra damage and extra Glooms?
nope. If it doesn't says it does then it doesn't.
Probably not allowed rules-as-written, but a thing that I'd be okay with as a GM.