Add additional UMA stats for remembering certificate decisions.

content/browser/ssl/ssl_policy_backend.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 CONTENT_BROWSER_SSL_SSL_POLICY_BACKEND_H_
 #define CONTENT_BROWSER_SSL_SSL_POLICY_BACKEND_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 21 matching lines @@
   void DenyCertForHost(net::X509Certificate* cert,
                        const std::string& host,
                        net::CertStatus error);
 
   // Records that |cert| is permitted to be used for |host| in the future, for
   // a specific error type.
   void AllowCertForHost(net::X509Certificate* cert,
                         const std::string& host,
                         net::CertStatus error);
 
-  // Queries whether |cert| is allowed or denied for |host|.
+  // Queries whether |cert| is allowed or denied for |host|. Returns true in
+  // |expired_previous_decision| if a user decision had been made previously but
+  // that decision has expired, otherwise false.
   net::CertPolicy::Judgment QueryPolicy(net::X509Certificate* cert,
                                         const std::string& host,
-                                        net::CertStatus error);
+                                        net::CertStatus error,
+                                        bool* expired_previous_decision);
 
  private:
   // SSL state specific for each host.
   SSLHostState* ssl_host_state_;
 
   NavigationControllerImpl* controller_;
 
   DISALLOW_COPY_AND_ASSIGN(SSLPolicyBackend);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SSL_SSL_POLICY_BACKEND_H_