Give `impl_named_for_with_location!` a second parameter `$name_type`
Give `impl_named_for_with_location!` a second parameter `$name_type`

Summary:
* Give `impl_named_for_with_location!` a second parameter `$name_type`
* This is so that bootcampers who implement tasks to add newtypes around `Object::name` etc. can modify the second parameter.

Reviewed By: tyao1

Differential Revision: D39835077

fbshipit-source-id: 427ac3ab7b03d9a97a0ddd975eaf477397601369

xuorig/relay,facebook/relay,facebook/relay,facebook/relay,xuorig/relay,facebook/relay,xuorig/relay,facebook/relay,xuorig/relay,xuorig/relay,xuorig/relay,facebook/relay