R1:eea94aaf6724

Update XHProf for handleRequest

Summary: Updates XHProf for handleRequest

Test Plan: Use XHProf

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T8628

Differential Revision: https://secure.phabricator.com/D13770