add resolveType to Resolver (#19237)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19237
ghimport-source-id: 70777ec37155be37efef1b743d564752e4dff9de
Differential Revision: D14928289
Reviewed By: zdevito
Pulled By: suo
fbshipit-source-id: 46827da9ace16730669fc654bf781d83172d18b1
