 Complete the following phrase:  On 6 July 2011, Johnson signed a contract extension at Liverpool, the length of which was not disclosed by the club. On 20 November 2011, Johnson scored a solo goal against his former club, Chelsea, at Stamford Bridge after being set up by Charlie Adam. This proved to be the decisive goal, with Liverpool winning 21. On 26 February 2012, he helped Liverpool to win their first trophy since 2006 as they won the 