[Domain Reliabiliy: net stack] Plumb received go away from server due to connection migration.

net/quic/quic_chromium_client_session.cc

Index: net/quic/quic_chromium_client_session.cc
diff --git a/net/quic/quic_chromium_client_session.cc b/net/quic/quic_chromium_client_session.cc
index 15ec708d5f4c8df66dd85ad4db6eea3e37c19fc4..85d06aec406b6a5426425d2d21159c7d99417a5c 100644
--- a/net/quic/quic_chromium_client_session.cc
+++ b/net/quic/quic_chromium_client_session.cc
@@ -205,6 +205,7 @@ QuicChromiumClientSession::QuicChromiumClientSession(
                                        std::move(socket_performance_watcher),
                                        net_log_)),
       going_away_(false),
+      port_migration_detected_(false),
       disabled_reason_(QUIC_DISABLED_NOT),
       token_binding_signatures_(kTokenBindingSignatureMapSize),
       weak_factory_(this) {
@@ -370,7 +371,7 @@ void QuicChromiumClientSession::OnStreamFrame(const QuicStreamFrame& frame) {
 void QuicChromiumClientSession::AddObserver(Observer* observer) {
   if (going_away_) {
     RecordUnexpectedObservers(ADD_OBSERVER);
-    observer->OnSessionClosed(ERR_UNEXPECTED);
+    observer->OnSessionClosed(ERR_UNEXPECTED, port_migration_detected_);
     return;
   }
 
@@ -760,6 +761,7 @@ void QuicChromiumClientSession::OnCryptoHandshakeMessageReceived(
 void QuicChromiumClientSession::OnGoAway(const QuicGoAwayFrame& frame) {
   QuicSession::OnGoAway(frame);
   NotifyFactoryOfSessionGoingAway();
+  port_migration_detected_ = frame.error_code == QUIC_ERROR_MIGRATING_PORT;
 }
 
 void QuicChromiumClientSession::OnRstStream(const QuicRstStreamFrame& frame) {
@@ -961,7 +963,7 @@ void QuicChromiumClientSession::CloseAllObservers(int net_error) {
   while (!observers_.empty()) {
     Observer* observer = *observers_.begin();
     observers_.erase(observer);
-    observer->OnSessionClosed(net_error);
+    observer->OnSessionClosed(net_error, port_migration_detected_);
   }
 }
 
@@ -1098,6 +1100,11 @@ bool QuicChromiumClientSession::MigrateToSocket(
   return true;
 }
 
+void QuicChromiumClientSession::PopulateNetErrorDetails(
+    NetErrorDetails* details) {
+  details->quic_port_migration_detected = port_migration_detected_;
+}
+
 const DatagramClientSocket* QuicChromiumClientSession::GetDefaultSocket()
     const {
   DCHECK(sockets_.back().get() != nullptr);