Revert of Clean up IPAddress::ToString related TODO.

net/quic/p2p/quic_p2p_session.cc

Index: net/quic/p2p/quic_p2p_session.cc
diff --git a/net/quic/p2p/quic_p2p_session.cc b/net/quic/p2p/quic_p2p_session.cc
index 17825c0af6188b4c0b5be482edb830ce962e13f6..94777b307d5a69edb548716eb1110b02c5b1c8ba 100644
--- a/net/quic/p2p/quic_p2p_session.cc
+++ b/net/quic/p2p/quic_p2p_session.cc
@@ -26,6 +26,12 @@
       crypto_stream_(new QuicP2PCryptoStream(this, crypto_config)),
       read_buffer_(new IOBuffer(static_cast<size_t>(kMaxPacketSize))) {
   DCHECK(config.negotiated());
+
+  // Non-null IP address needs to be passed here because QuicConnection uses
+  // ToString() to format addresses for logging and ToString() is not allowed
+  // for empty addresses.
+  // TODO(sergeyu): Fix QuicConnection and remove SetSelfAddress() call below.
+  this->connection()->SetSelfAddress(IPEndPoint(IPAddress::IPv4AllZeros(), 0));
 }
 
 QuicP2PSession::~QuicP2PSession() {}