Land Recent QUIC changes.

net/quic/quic_connection_logger.cc

Index: net/quic/quic_connection_logger.cc
diff --git a/net/quic/quic_connection_logger.cc b/net/quic/quic_connection_logger.cc
index 2221b501231664389389571aeaafa983b641181f..5195f4391a3087b90446c3755f7f0127a6e7594e 100644
--- a/net/quic/quic_connection_logger.cc
+++ b/net/quic/quic_connection_logger.cc
@@ -12,6 +12,8 @@
 #include "net/base/net_log.h"
 #include "net/quic/crypto/crypto_handshake.h"
 
+using std::string;
+
 namespace net {
 
 namespace {
@@ -416,4 +418,11 @@ void QuicConnectionLogger::OnConnectionClose(QuicErrorCode error,
       base::Bind(&NetLogQuicConnectionClosedCallback, error, from_peer));
 }
 
+void QuicConnectionLogger::OnSuccessfulVersionNegotiation(
+    const QuicVersion& version) {
+  string quic_version = QuicVersionToString(version);
+  net_log_.AddEvent(NetLog::TYPE_QUIC_SESSION_VERSION_NEGOTIATED,
+                    NetLog::StringCallback("version", &quic_version));
+}
+
 }  // namespace net