Add missing cuda.to_gpu()
Add missing cuda.to_gpu()

yanweifu/chainer,cupy/cupy,keisuke-umezawa/chainer,wkentaro/chainer,niboshi/chainer,laysakura/chainer,okuta/chainer,okuta/chainer,okuta/chainer,t-abe/chainer,wkentaro/chainer,wavelets/chainer,1986ks/chainer,rezoo/chainer,benob/chainer,aonotas/chainer,kikusu/chainer,kiyukuta/chainer,hidenori-t/chainer,jnishi/chainer,ktnyt/chainer,umitanuki/chainer,chainer/chainer,ikasumi/chainer,minhpqn/chainer,niboshi/chainer,chainer/chainer,muupan/chainer,keisuke-umezawa/chainer,ktnyt/chainer,masia02/chainer,woodshop/chainer,AlpacaDB/chainer,cupy/cupy,chainer/chainer,woodshop/complex-chainer,ysekky/chainer,jnishi/chainer,cupy/cupy,tigerneil/chainer,niboshi/chainer,tscohen/chainer,jnishi/chainer,ronekko/chainer,chainer/chainer,okuta/chainer,truongdq/chainer,hvy/chainer,tkerola/chainer,kuwa32/chainer,truongdq/chainer,jnishi/chainer,kikusu/chainer,cemoody/chainer,muupan/chainer,t-abe/chainer,kashif/chainer,ytoyama/yans_chainer_hackathon,keisuke-umezawa/chainer,cupy/cupy,Kaisuke5/chainer,AlpacaDB/chainer,ktnyt/chainer,wkentaro/chainer,hvy/chainer,sou81821/chainer,sinhrks/chainer,wkentaro/chainer,pfnet/chainer,delta2323/chainer,hvy/chainer,benob/chainer,keisuke-umezawa/chainer,sinhrks/chainer,niboshi/chainer,ktnyt/chainer,hvy/chainer,anaruse/chainer