Expose to python the backward AD view_func (#89586)

This will be useful for other systems (AOTAutograd) that want to replay autograd views.

FYI @bdhirsh
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89586
Approved by: https://github.com/soulitzer

torch/csrc/autograd/variable.h

@@ -791,6 +791,11 @@ inline Variable make_variable(
   return Variable();
 }
 
+namespace utils {
+
+TORCH_API bool has_same_meta(const Variable& base, const Variable& other);
+
+} // namespace utils
 } // namespace autograd
 } // namespace torch