Add initial version of captive portal list checking.

chrome/browser/resources/ssl/ssl_error_assistant/ssl_error_assistant.asciipb

Index: chrome/browser/resources/ssl/ssl_error_assistant/ssl_error_assistant.asciipb
diff --git a/chrome/browser/resources/ssl/ssl_error_assistant/ssl_error_assistant.asciipb b/chrome/browser/resources/ssl/ssl_error_assistant/ssl_error_assistant.asciipb
index a6714bf5a0e95fdc9863c3fee4b5396ac3f87521..686dc829157eda49ade32e399a31f0696e53d462 100644
--- a/chrome/browser/resources/ssl/ssl_error_assistant/ssl_error_assistant.asciipb
+++ b/chrome/browser/resources/ssl/ssl_error_assistant/ssl_error_assistant.asciipb
@@ -2,17 +2,21 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# Placeholder for list of known certificates that are treated as captive
+# Placeholder list for SPKI hashes of certificates that are treated as captive
 # portal certificates.
 
 # TODO(crbug.com/640835): Populate this with full list.
 version_id: 1
 
-# See chrome/browser/ssl/tls_error_assistant.proto for the full format.
+# See chrome/browser/ssl/ssl_error_assistant.proto for the full format.
 captive_portal_cert {
-
   # Sha256 hash of the certificate's public key. The fingerprint is prefixed
   # with "sha256/" and encoded in base64 (same format as
   # src/net/http/transport_security_state_static.pins)
   sha256_hash: "sha256/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="

[Ryan Sleevi, 2017/02/01 22:06:06]

Is this an example? Or test data? I mean, it's technically possible for this to
happen, however unwise.

(I mention this because I know of at least two bugs that assumed "magic test
value will never happen in the wild" which, given probability, ended up
happening in the wild)

[meacer, 2017/02/02 01:56:05]

It's magic test data and I thought we would publish if we ever hit this in the
wild :) But in all seriousness, it's not needed anymore now that we have a test
site, so removed.

 }
+
+# https://captive-portal.badssl.com leaf:
+captive_portal_cert {
+  sha256_hash: "sha256/fjZPHewEHTrMDX3I1ecEIeoy3WFxHyGplOLv28kIbtI="
+}