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

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.

Not only will a judge be asked to enforce Google's sale of Chrome, but the filing made to a Washington federal court also outlines that, "following its divestiture of Chrome [Google] may not reenter the browser market for five years " (via The Guardian ).