Refactor ChromeFraudulentCertReporter for code reuse by SSL reporting

chrome/browser/net/cert_logger.proto

 // 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.
 //
 // This protobuffer is intended to store reports from Chrome users of
-// certificate pinning errors. A report will be sent from Chrome when it gets
+// certificate errors. A report will be sent from Chrome when it gets
 // e.g. a certificate for google.com that chains up to a root CA not expected by
 // Chrome for that origin, such as DigiNotar (compromised in July 2011), or
-// other pinning errors such as a blacklisted cert in the chain. The
-// report from the user will include the hostname being accessed, 
+// other pinning errors such as a blacklisted cert in the chain, or
+// (when opted in) other certificate validation errors like an expired
+// cert. The report from the user will include the hostname being accessed,
 // the full certificate chain (in PEM format), and the
 // timestamp of when the client tried to access the site. A response is
 // generated by the frontend and logged, including validation and error checking
 // done on the client's input data.
 
 
 syntax = "proto2";
 
 package chrome_browser_net;
 
@@ skipping 25 matching lines @@
     OK = 1;
     MALFORMED_CERT_DATA = 2;
     HOST_CERT_DONT_MATCH = 3;
     ROOT_NOT_RECOGNIZED = 4;
     ROOT_NOT_UNEXPECTED = 5;
     OTHER_ERROR = 6;
   };
   required ResponseCode response = 1;
 };