Google must sell its Chrome browser to restore competition in the online search market, US prosecutors have argued.The proposed breakup has been floated in a 23-page document filed by the US Justice Department. It also calls for lawmakers to impose restrictions designed to prevent its Android smartphone software from favouring its own search engine.If the rules were brought in, it would essentially result in Google being highly regulated for 10 years.Google controls about 90% of the online search market and ...