Add a DevTools warning for a missing subjectAltName

components/security_state/core/security_state.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/security_state/core/security_state.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 204 matching lines @@
   security_info->sct_verify_statuses =
       visible_security_state.sct_verify_statuses;
 
   security_info->malicious_content_status =
       visible_security_state.malicious_content_status;
 
   security_info->displayed_password_field_on_http =
       visible_security_state.displayed_password_field_on_http;
   security_info->displayed_credit_card_field_on_http =
       visible_security_state.displayed_credit_card_field_on_http;
+  if (visible_security_state.certificate) {
+    security_info->cert_missing_subject_alt_name =
+        !visible_security_state.certificate->GetSubjectAltName(nullptr,
+                                                               nullptr);
+  }
 
   security_info->security_level = GetSecurityLevelForRequest(
       visible_security_state, used_policy_installed_certificate,
       is_origin_secure_callback, security_info->sha1_in_chain,
       security_info->mixed_content_status,
       security_info->content_with_cert_errors_status);
 }
 
 }  // namespace
 
 const base::Feature kHttpFormWarningFeature{"HttpFormWarning",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 
 SecurityInfo::SecurityInfo()
     : security_level(NONE),
       malicious_content_status(MALICIOUS_CONTENT_STATUS_NONE),
       sha1_in_chain(false),
       mixed_content_status(CONTENT_STATUS_NONE),
       content_with_cert_errors_status(CONTENT_STATUS_NONE),
       scheme_is_cryptographic(false),
       cert_status(0),
       security_bits(-1),
       connection_status(0),
       key_exchange_group(0),
       obsolete_ssl_status(net::OBSOLETE_SSL_NONE),
       pkp_bypassed(false),
       displayed_password_field_on_http(false),
-      displayed_credit_card_field_on_http(false) {}
+      displayed_credit_card_field_on_http(false),
+      cert_missing_subject_alt_name(false) {}
 
 SecurityInfo::~SecurityInfo() {}
 
 void GetSecurityInfo(
     std::unique_ptr<VisibleSecurityState> visible_security_state,
     bool used_policy_installed_certificate,
     IsOriginSecureCallback is_origin_secure_callback,
     SecurityInfo* result) {
   SecurityInfoForRequest(*visible_security_state,
                          used_policy_installed_certificate,
@@ skipping 36 matching lines @@
               other.displayed_content_with_cert_errors &&
           ran_content_with_cert_errors == other.ran_content_with_cert_errors &&
           pkp_bypassed == other.pkp_bypassed &&
           displayed_password_field_on_http ==
               other.displayed_password_field_on_http &&
           displayed_credit_card_field_on_http ==
               other.displayed_credit_card_field_on_http);
 }
 
 }  // namespace security_state