fix build break (caused by gtest downloading)
fix build break (caused by gtest downloading)

taotaowill/galaxy,May2016/galaxy,baidu/galaxy,Kai-Zhang/galaxy,baidu/galaxy,taotaowill/galaxy,May2016/galaxy,taotaowill/galaxy,Kai-Zhang/galaxy,May2016/galaxy,Kai-Zhang/galaxy,baidu/galaxy