Introduce new thrift method to force materialize files
Introduce new thrift method to force materialize files

Reviewed By: chadaustin

Differential Revision: D36152912

fbshipit-source-id: 54ff2328a499282fdce0f9ef13208b1050adef36

facebook/watchman,facebook/watchman,facebook/watchman,facebook/watchman,facebook/watchman,facebook/watchman,facebook/watchman,facebook/watchman,facebook/watchman