If a judge orders Google to sell Chrome, it could dramatically upend the multibillion-dollar online search business.

The Department of Justice's proposed penalties against Google's illegal monopoly include the sale of Chrome, the potential sale of Android, and a slew of new rules and regulations for how the company regulates search data.

The US government formally proposed a partial breakup of Google on Wednesday, urging a federal judge to force a sale of the company’s Chrome web browser after a landmark ruling this year finding that Google had violated US antitrust law with its search business.