Update wip backend version in test kit
Update wip backend version in test kit

Review URL: https://chromiumcodereview.appspot.com/9677025
limeditor/chromedevtools,limeditor/chromedevtools,maverick1995/chromedevtools,haosu1987/chromedevtools,luobenyu/chromedevtools,ParinVachhani/chromedevtools,zhuangzhineng/chromedevtools,zhuangzhineng/chromedevtools,maverick1995/chromedevtools,haosu1987/chromedevtools,ParinVachhani/chromedevtools,tonyhoactive/chromedevtools,tonyhoactive/chromedevtools,limeditor/chromedevtools,dezelin/chromedevtools,amostl/chromedevtools,amostl/chromedevtools,luobenyu/chromedevtools,zhuangzhineng/chromedevtools,ParinVachhani/chromedevtools,luobenyu/chromedevtools,maverick1995/chromedevtools,limeditor/chromedevtools,tonyhoactive/chromedevtools,haosu1987/chromedevtools,ParinVachhani/chromedevtools,maverick1995/chromedevtools,dezelin/chromedevtools,haosu1987/chromedevtools,dezelin/chromedevtools,dezelin/chromedevtools,amostl/chromedevtools,limeditor/chromedevtools,amostl/chromedevtools,amostl/chromedevtools,maverick1995/chromedevtools,ParinVachhani/chromedevtools,tonyhoactive/chromedevtools,luobenyu/chromedevtools,haosu1987/chromedevtools,zhuangzhineng/chromedevtools,zhuangzhineng/chromedevtools,luobenyu/chromedevtools,dezelin/chromedevtools,tonyhoactive/chromedevtools