Add metric to count number of performed passes
Add metric to count number of performed passes

Reviewed By: ssj933

Differential Revision: D27269664

fbshipit-source-id: bc7db456b29dec8eea8345503824ea4a94b1c05e

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex