Measure how often the users are encountering MD5...

net/base/ssl_client_socket_win.h

 // Copyright (c) 2006-2008 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 NET_BASE_SSL_CLIENT_SOCKET_WIN_H_
 #define NET_BASE_SSL_CLIENT_SOCKET_WIN_H_
 
 #define SECURITY_WIN32  // Needs to be defined before including security.h
 
 #include <windows.h>
@@ skipping 45 matching lines @@
   int DoHandshakeReadComplete(int result);
   int DoHandshakeWrite();
   int DoHandshakeWriteComplete(int result);
   int DoPayloadRead();
   int DoPayloadReadComplete(int result);
   int DoPayloadEncrypt();
   int DoPayloadWrite();
   int DoPayloadWriteComplete(int result);
 
   int DidCompleteHandshake();
+  static void LogConnectionTypeMetrics(PCCERT_CHAIN_CONTEXT chain_context);
   int VerifyServerCert();
 
   CompletionCallbackImpl<SSLClientSocketWin> io_callback_;
   scoped_ptr<ClientSocket> transport_;
   std::string hostname_;
   SSLConfig ssl_config_;
 
   CompletionCallback* user_callback_;
 
   // Used by both Read and Write functions.
@@ skipping 55 matching lines @@
   bool ignore_ok_result_;
 
   // True if the user has no client certificate.
   bool no_client_cert_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_SSL_CLIENT_SOCKET_WIN_H_