The Harkin-Engel Protocol, a cocoa industry-wide agreement signed in 2001, was written to put an end to forced child labor in chocolate by 2005. That deadline had to be extended to 2008, and again to 2010. It's now been more than 10 years…CNN asked the companies who signed the protocol for their response. [Refers to Hershey, Kraft-Cadbury, Mars, World’s Finest Chocolate, Barry Callebaut, Nestlé, ADM, Ferrerro, Guittard, Blommer Chocolate, and Chocosuisse]