Simplify overridable logic in SSLBlockingPage

chrome/browser/ssl/ssl_blocking_page.h

 // Copyright (c) 2012 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_
 
 #include <string>
 #include <vector>
 
@@ skipping 84 matching lines @@
       const content::NotificationSource& source,
       const content::NotificationDetails& details) OVERRIDE;
 
   base::Callback<void(bool)> callback_;
 
   content::WebContents* web_contents_;
   int cert_error_;
   const net::SSLInfo ssl_info_;
   GURL request_url_;
   // Could the user successfully override the error?
+  // overridable_ will be set to false if strict_enforcement_ is true.
   bool overridable_;
   // Has the site requested strict enforcement of certificate errors?
   bool strict_enforcement_;
   content::InterstitialPage* interstitial_page_;  // Owns us.
   // Is the hostname for an internal network?
   bool internal_;
   // How many times is this same URL in history?
   int num_visits_;
   // Used for getting num_visits_.
   base::CancelableTaskTracker request_tracker_;
   // Is captive portal detection enabled?
   bool captive_portal_detection_enabled_;
   // Did the probe complete before the interstitial was closed?
   bool captive_portal_probe_completed_;
   // Did the captive portal probe receive an error or get a non-HTTP response?
   bool captive_portal_no_response_;
   // Was a captive portal detected?
   bool captive_portal_detected_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(SSLBlockingPage);
 };
 
 #endif  // CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_