How likely will Trump DOJ drop this? Consumers have choice, albeit just a handful of credible options. Nobody is forced to use Chrome (unlike MSFT pushing IE back in the day)
If he's smarter than I think, then expect him to go after Google Search (the alleged source of anti-conservative bias). But if he's as dumb as I think, expect him to support the Chrome breakup, even though it would not advance his goals and wouldn't be coherent antitrust policy, because it would let him claim a "win".