Log QUIC public reset client address mismatch to a histogram.

net/quic/crypto/crypto_handshake_message.cc

 // Copyright (c) 2013 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.
 
 #include "net/quic/crypto/crypto_handshake_message.h"
 
 #include "base/strings/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/crypto/crypto_framer.h"
 #include "net/quic/crypto/crypto_protocol.h"
+#include "net/quic/quic_socket_address_coder.h"
 #include "net/quic/quic_utils.h"
 
 using base::StringPiece;
 using base::StringPrintf;
 using std::string;
 using std::vector;
 
 namespace net {
 
 CryptoHandshakeMessage::CryptoHandshakeMessage()
@@ skipping 250 matching lines @@
             QuicTag tag;
             memcpy(&tag, it->second.data() + j, sizeof(tag));
             if (j > 0) {
               ret += ",";
             }
             ret += "'" + QuicUtils::TagToString(tag) + "'";
           }
           done = true;
         }
         break;
+      case kCADR:
+        // IP address and port
+        if (!it->second.empty()) {
+          QuicSocketAddressCoder decoder;
+          if (decoder.Decode(it->second.data(), it->second.size())) {
+            ret += IPAddressToStringWithPort(decoder.ip(), decoder.port());
+            done = true;
+          }
+        }
+        break;
       case kSCFG:
         // nested messages.
         if (!it->second.empty()) {
           scoped_ptr<CryptoHandshakeMessage> msg(
               CryptoFramer::ParseMessage(it->second));
           if (msg.get()) {
             ret += "\n";
             ret += msg->DebugStringInternal(indent + 1);
 
             done = true;
@@ skipping 13 matching lines @@
       ret += "0x" + base::HexEncode(it->second.data(), it->second.size());
     }
     ret += "\n";
   }
   --indent;
   ret += string(2 * indent, ' ') + ">";
   return ret;
 }
 
 }  // namespace net