Revert 0cf546
Revert 0cf546

delta2323/chainer,hvy/chainer,AlpacaDB/chainer,wkentaro/chainer,jnishi/chainer,benob/chainer,okuta/chainer,cupy/cupy,okuta/chainer,chainer/chainer,niboshi/chainer,kashif/chainer,cupy/cupy,kikusu/chainer,ktnyt/chainer,chainer/chainer,aonotas/chainer,pfnet/chainer,niboshi/chainer,jnishi/chainer,wkentaro/chainer,ktnyt/chainer,hvy/chainer,okuta/chainer,ysekky/chainer,ronekko/chainer,rezoo/chainer,wkentaro/chainer,kikusu/chainer,ktnyt/chainer,jnishi/chainer,anaruse/chainer,wkentaro/chainer,keisuke-umezawa/chainer,okuta/chainer,chainer/chainer,tkerola/chainer,benob/chainer,jnishi/chainer,hvy/chainer,niboshi/chainer,cupy/cupy,AlpacaDB/chainer,hvy/chainer,ktnyt/chainer,keisuke-umezawa/chainer,niboshi/chainer,keisuke-umezawa/chainer,kiyukuta/chainer,chainer/chainer,cupy/cupy,keisuke-umezawa/chainer