GitLab

refresh token.

This change is necessary because, if the host daemon attempts to
retrieve an email address for an auth code from GCD, the request
fails, causing the host daemon to report failure and not return a
refresh token.

BUG=471928

Review URL: https://codereview.chromium.org/1076093003

Cr-Commit-Position: refs/heads/master@{#326895}