Land Recent QUIC changes.

net/base/net_util.h

Index: net/base/net_util.h
diff --git a/net/base/net_util.h b/net/base/net_util.h
index ecd7400cfa16e516a1d986ea76a807db5faa07a5..113c8e8d2d567496b54c9f1ee5784a4e7c973d29 100644
--- a/net/base/net_util.h
+++ b/net/base/net_util.h
@@ -166,6 +166,9 @@ NET_EXPORT std::string IPAddressToString(const IPAddressNumber& addr);
 NET_EXPORT std::string IPAddressToStringWithPort(
     const IPAddressNumber& addr, uint16 port);
 
+// Returns the address as a sequence of bytes in network-byte-order.
+NET_EXPORT std::string IPAddressToPackedString(const IPAddressNumber& addr);
+
 // Returns the hostname of the current system. Returns empty string on failure.
 NET_EXPORT std::string GetHostName();