Record the time when the interstitial is constructed

chrome/browser/ssl/bad_clock_blocking_page.h

 // 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.
 
 #ifndef CHROME_BROWSER_SSL_BAD_CLOCK_BLOCKING_PAGE_H_
 #define CHROME_BROWSER_SSL_BAD_CLOCK_BLOCKING_PAGE_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 53 matching lines @@
   // SecurityInterstitialPage implementation:
   bool ShouldCreateNewNavigation() const override;
   void PopulateInterstitialStrings(
       base::DictionaryValue* load_time_data) override;
 
  private:
   void NotifyDenyCertificate();
 
   base::Callback<void(content::CertificateRequestResultType)> callback_;
   const net::SSLInfo ssl_info_;
-  const base::Time time_triggered_;
   const std::unique_ptr<ChromeControllerClient> controller_;
 
   const std::unique_ptr<CertReportHelper> cert_report_helper_;
   const std::unique_ptr<security_interstitials::BadClockUI> bad_clock_ui_;
 
   DISALLOW_COPY_AND_ASSIGN(BadClockBlockingPage);
 };
 
 #endif  // CHROME_BROWSER_SSL_BAD_CLOCK_BLOCKING_PAGE_H_