caffe2::Tensor::is_same() (#15407)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/15407
Don't ask the tensor for its intrusive pointer if we just want to check if two tensors are the same.
This mirrors ATen APIs.
Reviewed By: dzhulgakov
Differential Revision: D13520389
fbshipit-source-id: 681317f36f480ab60e532bb08a073f98f39770fd
