Enable PENDING_REF_PREFIX in codereview.settings.

Remove the FORCE_HTTPS_COMMIT_URL as well, since it's no
longer needed after switching to Git.

BUG=chromium:412012
R=agable@chromium.org

Review URL: https://webrtc-codereview.appspot.com/25339004

Cr-Commit-Position: refs/heads/master@{#8846}
1 file changed