You honestly can't say without a doubt what anyone would do for money. Most people that do porn are desperate for quick cash. Sucking a dick or letting another guy suck your dick is the quickest way to do that for male actors. Chris has done gay porn and if asked he wouldn't deny it, but that was YEARS ago, and there are many straight actors in the biz that have done the same in the past. That's definitely in the past as of now since all he does at the moment is straight porn. He's also considered one of the most featured male actors in the porn industry to date. Maybe more than half of the male talent in straight porn have done scenes for male viewers sometime in their career at some point in their lives (some have even escorted) because they are more marketable and profitable to gay and bi men, plain and simple. Their personal sexual identities matter very little. If they can perform, they're doing their job.
