Requested by Peter Palfrader via email.
The intermediates are from https://letsencrypt.org/certificates/
(lets-encrypt-x1-cross-signed.pem and lets-encrypt-x2-cross-signed.pem)
TEST=1. In a branded Chrome build (not Chromium), visit chrome://net-internals/#hsts
2. Under "Query domain", input "torproject.org"
3. There should be a field "static_spki_hashes" with a comma-separated list of values.
4. Check that it contains the value "sha256/YLh1dUR9y6Kja30RrAn7JKnbQG/uEtLMkBgFF2Fuihg=" (this is the hash for X1).
BUG=
Review URL: https://codereview.chromium.org/1473243005
Cr-Commit-Position: refs/heads/master@{#362300}