Show the "cannot proceed" text only when appropriate.

chrome/browser/ssl/ssl_blocking_page.h

 // Copyright (c) 2011 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_BLOCKING_PAGE_H_
 #define CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 17 matching lines @@
 // shown when a certificate error happens.
 // It deletes itself when the interstitial page is closed.
 class SSLBlockingPage : public content::InterstitialPageDelegate {
  public:
   SSLBlockingPage(
       content::WebContents* web_contents,
       int cert_error,
       const net::SSLInfo& ssl_info,
       const GURL& request_url,
       bool overridable,
+      bool strict_enforcement,
       const base::Callback<void(bool)>& callback);
   virtual ~SSLBlockingPage();
 
   // A method that sets strings in the specified dictionary from the passed
   // vector so that they can be used to resource the ssl_roadblock.html/
   // ssl_error.html files.
   // Note: there can be up to 5 strings in |extra_info|.
   static void SetExtraInfo(base::DictionaryValue* strings,
                            const std::vector<string16>& extra_info);
 
@@ skipping 10 matching lines @@
  private:
   void NotifyDenyCertificate();
   void NotifyAllowCertificate();
 
   base::Callback<void(bool)> callback_;
 
   content::WebContents* web_contents_;
   int cert_error_;
   net::SSLInfo ssl_info_;
   GURL request_url_;
-  // Is the certificate error overridable or fatal?
+  // Could the user successfully override the error?
   bool overridable_;
+  // Has the site requested strict enforcement of certificate errors?
+  bool strict_enforcement_;
   content::InterstitialPage* interstitial_page_;  // Owns us.
 
   DISALLOW_COPY_AND_ASSIGN(SSLBlockingPage);
 };
 
 #endif  // CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_