Test interstitials shouldn't use null SSLCertReporters

chrome/browser/ssl/cert_report_helper.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 "chrome/browser/ssl/cert_report_helper.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 42 matching lines @@
     bool overridable,
     const base::Time& interstitial_time,
     security_interstitials::MetricsHelper* metrics_helper)
     : ssl_cert_reporter_(std::move(ssl_cert_reporter)),
       web_contents_(web_contents),
       request_url_(request_url),
       ssl_info_(ssl_info),
       interstitial_reason_(interstitial_reason),
       overridable_(overridable),
       interstitial_time_(interstitial_time),
-      metrics_helper_(metrics_helper) {}
+      metrics_helper_(metrics_helper) {
+  DCHECK(ssl_cert_reporter);
+}
 
 CertReportHelper::~CertReportHelper() {
 }
 
 void CertReportHelper::PopulateExtendedReportingOption(
     base::DictionaryValue* load_time_data) {
   // Only show the checkbox if not off-the-record and if this client is
   // part of the respective Finch group, and the feature is not disabled
   // by policy.
   const bool show = ShouldShowCertificateReporterCheckbox();
@@ skipping 86 matching lines @@
       if (sendingThreshold >= 0.0 && sendingThreshold <= 1.0)
         return base::RandDouble() <= sendingThreshold;
     }
   }
   return false;
 }
 
 bool CertReportHelper::IsPrefEnabled(const char* pref) {
   return GetProfile(web_contents_)->GetPrefs()->GetBoolean(pref);
 }