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

net/quic/quic_chromium_client_session.h

Index: net/quic/quic_chromium_client_session.h
diff --git a/net/quic/quic_chromium_client_session.h b/net/quic/quic_chromium_client_session.h
index c4ef29387fc18b2283d36946893e09ed2e3dda49..3239077c31243a58f73d4e317d7d65f4ff0bd3a5 100644
--- a/net/quic/quic_chromium_client_session.h
+++ b/net/quic/quic_chromium_client_session.h
@@ -20,6 +20,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "net/base/completion_callback.h"
+#include "net/base/net_error_details.h"
 #include "net/base/socket_performance_watcher.h"
 #include "net/cert/ct_verify_result.h"
 #include "net/proxy/proxy_server.h"
@@ -248,6 +249,9 @@ class NET_EXPORT_PRIVATE QuicChromiumClientSession
                        scoped_ptr<QuicChromiumPacketReader> reader,
                        scoped_ptr<QuicPacketWriter> writer);
 
+  // Populates network error details for this session.
+  void PopulateNetErrorDetails(NetErrorDetails* details);
+
   // Returns current default socket. This is the socket over which all
   // QUIC packets are sent. This default socket can change, so do not store the
   // returned socket.
@@ -328,6 +332,8 @@ class NET_EXPORT_PRIVATE QuicChromiumClientSession
   // True when the session is going away, and streams may no longer be created
   // on this session. Existing stream will continue to be processed.
   bool going_away_;
+  // True when the session receives a go away from server due to port migration.
+  bool port_migration_detected_;
   QuicDisabledReason disabled_reason_;
   TokenBindingSignatureMap token_binding_signatures_;
   base::WeakPtrFactory<QuicChromiumClientSession> weak_factory_;