Record the time when the interstitial is constructed

chrome/browser/ssl/captive_portal_blocking_page.cc

 // Copyright 2014 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/captive_portal_blocking_page.h"
 
 #include <utility>
 
 #include "base/i18n/rtl.h"
 #include "base/memory/ptr_util.h"
@@ skipping 70 matching lines @@
                                CreateMetricsHelper(web_contents, request_url)),
       login_url_(login_url),
       ssl_info_(ssl_info),
       callback_(callback) {
   DCHECK(login_url_.is_valid());
 
   if (ssl_cert_reporter) {
     cert_report_helper_.reset(new CertReportHelper(
         std::move(ssl_cert_reporter), web_contents, request_url, ssl_info,
         certificate_reporting::ErrorReport::INTERSTITIAL_CAPTIVE_PORTAL, false,
-        nullptr));
+        base::Time::Now(), nullptr));
   }
 
   RecordUMA(SHOW_ALL);
 }
 
 CaptivePortalBlockingPage::~CaptivePortalBlockingPage() {
 }
 
 const void* CaptivePortalBlockingPage::GetTypeForTesting() const {
   return CaptivePortalBlockingPage::kTypeForTesting;
@@ skipping 162 matching lines @@
         certificate_reporting::ErrorReport::USER_DID_NOT_PROCEED);
   }
 
   // Need to explicity deny the certificate via the callback, otherwise memory
   // is leaked.
   if (!callback_.is_null()) {
     callback_.Run(content::CERTIFICATE_REQUEST_RESULT_TYPE_CANCEL);
     callback_.Reset();
   }
 }