Fix for cpplint
Fix for cpplint

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