Use chainer implementation for one-dimensional max pooling even when use_cudnn is True.
Use chainer implementation for one-dimensional max pooling even when use_cudnn is True.

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