refactor caffe2 operator constructors - 7/9 (#17088)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/17088
clangr codemod
also manually moved the constructor of a class from the .cpp file to the .h file.
Reviewed By: ezyang
Differential Revision: D14078531
fbshipit-source-id: 2adb4ac0ce523742da6cce3bc3b6c177b816c299
