Add a bucket in the connection type histograms for...

net/base/connection_type_histograms.h

-// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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_CONNECTION_TYPE_HISTOGRAMS_H_
 #define NET_BASE_CONNECTION_TYPE_HISTOGRAMS_H_
 
 // The UpdateConnectionTypeHistograms function collects statistics related
 // to the number of MD5 certificates that our users are encountering.  The
 // information will help us decide when it is fine for browsers to stop
 // supporting MD5 certificates, in light of the recent MD5 certificate
 // collision attack (see "MD5 considered harmful today: Creating a rogue CA
 // certificate" at http://www.win.tue.nl/hashclash/rogue-ca/).
 
 namespace net {
 
 enum ConnectionType {
   CONNECTION_ANY = 0,      // Any connection, SSL or not
   CONNECTION_SSL = 1,      // An SSL connection
   CONNECTION_SSL_MD5 = 2,  // An SSL connection with an MD5 certificate in
                            // the certificate chain (excluding root)
   CONNECTION_SSL_MD2 = 3,  // An SSL connection with an MD2 certificate in
                            // the certificate chain (excluding root)
   CONNECTION_SSL_MD4 = 4,  // An SSL connection with an MD4 certificate in
                            // the certificate chain (excluding root)
+  CONNECTION_SSL_MD5_CA = 5,  // An SSL connection with an MD5 CA certificate
+                              // in the certificate chain (excluding root)
   NUM_OF_CONNECTION_TYPES
 };
 
 void UpdateConnectionTypeHistograms(ConnectionType type);
 
 }  // namespace net
 
 #endif  // NET_BASE_CONNECTION_TYPE_HISTOGRAMS_H_