use IMPLEMENT_RESOURCE_ALLOCATION for resources

Summary: It's confusing to use IMPLEMENT_OBJECT_ALLOCATION for resources,
and we might want to change how object/resources are swept
independently.

Reviewed By: @markw65

Differential Revision: D1703478

Signature: t1:1703478:1416964853:82feff283db1c7eaf3b5af7e4a76478074c98a51