Suggest upgrading to SP3 or later for invalid certificate errors.

chrome/browser/ssl/ssl_error_classification.h

 // 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.
 
 #ifndef CHROME_BROWSER_SSL_SSL_ERROR_CLASSIFICATION_H_
 #define CHROME_BROWSER_SSL_SSL_ERROR_CLASSIFICATION_H_
 
 #include "base/time/time.h"
 #include "net/cert/x509_certificate.h"
 
 // This class calculates the severity scores for the different type of SSL
 // errors.
 class SSLErrorClassification {
  public:
   SSLErrorClassification(base::Time current_time,
                          const net::X509Certificate& cert);
   ~SSLErrorClassification();
 
   // This method checks whether the user clock is in the past or not.
   static bool IsUserClockInThePast(base::Time time_now);
 
   // This method checks whether the system time is too far in the future or
   // the user is using a version of Chrome which is more than 1 year old.
   static bool IsUserClockInTheFuture(base::Time time_now);
 
+  static bool IsWindowsVersionSP3OrLower();
+
   // A method which calculates the severity score when the ssl error is
   // CERT_DATE_INVALID.
   float InvalidDateSeverityScore() const;
 
   static void RecordUMAStatistics(bool overridable);
   base::TimeDelta TimePassedSinceExpiry() const;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(SSLErrorClassification, TestDateInvalidScore);
 
   float CalculateScoreTimePassedSinceExpiry() const;
 
   // This stores the current time.
   base::Time current_time_;
 
   // This stores the certificate.
   const net::X509Certificate& cert_;
 };
 
 #endif  // CHROME_BROWSER_SSL_SSL_ERROR_CLASSIFICATION_H_