Migrates QUIC sessions to a new network when old network is (about to be) disconnected.

net/tools/quic/quic_simple_client.cc

Index: net/tools/quic/quic_simple_client.cc
diff --git a/net/tools/quic/quic_simple_client.cc b/net/tools/quic/quic_simple_client.cc
index fc51d531490dffbdd638dbaa0393e1b8f85d1c6f..946cc0fbf86b6b325823e6995cc4abbefa671759 100644
--- a/net/tools/quic/quic_simple_client.cc
+++ b/net/tools/quic/quic_simple_client.cc
@@ -385,7 +385,8 @@ QuicPacketWriter* QuicSimpleClient::CreateQuicPacketWriter() {
   return new QuicDefaultPacketWriter(socket_.get());
 }
 
-void QuicSimpleClient::OnReadError(int result) {
+void QuicSimpleClient::OnReadError(int result,
+                                   const DatagramClientSocket* socket) {
   LOG(ERROR) << "QuicSimpleClient read failed: " << ErrorToShortString(result);
   Disconnect();
 }