By special request from Eric Mill (of 18F).
login.gov does not exist, but it will be created very soon.
BUG=613292
TBR=palmer@chromium.org
Review URL: https://codereview.chromium.org/1992813005 .
Cr-Commit-Position: refs/heads/master@{#394693}
(cherry picked from commit d275537a5620721420d9008ae138fc92d887082c)
Review URL: https://codereview.chromium.org/1999233002 .
Cr-Commit-Position: refs/branch-heads/2704@{#625}
Cr-Branched-From: 6e53600def8f60d8c632fadc70d7c1939ccea347-refs/heads/master@{#386251}