Add device_list_test.cc
Add device_list_test.cc

wkentaro/chainer,niboshi/chainer,ktnyt/chainer,okuta/chainer,jnishi/chainer,wkentaro/chainer,jnishi/chainer,keisuke-umezawa/chainer,chainer/chainer,keisuke-umezawa/chainer,chainer/chainer,okuta/chainer,keisuke-umezawa/chainer,chainer/chainer,jnishi/chainer,ktnyt/chainer,hvy/chainer,ktnyt/chainer,hvy/chainer,hvy/chainer,okuta/chainer,hvy/chainer,niboshi/chainer,niboshi/chainer,pfnet/chainer,niboshi/chainer,chainer/chainer,tkerola/chainer,keisuke-umezawa/chainer,jnishi/chainer,wkentaro/chainer,wkentaro/chainer,okuta/chainer,ktnyt/chainer