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

net/quic/quic_http_stream.cc

Index: net/quic/quic_http_stream.cc
diff --git a/net/quic/quic_http_stream.cc b/net/quic/quic_http_stream.cc
index 5578bd67b718c9576e8d2cee44d945e59fef6b21..b3e9d52a0c5c2711be790932722252952e29814c 100644
--- a/net/quic/quic_http_stream.cc
+++ b/net/quic/quic_http_stream.cc
@@ -437,6 +437,8 @@ void QuicHttpStream::PopulateNetErrorDetails(NetErrorDetails* details) {
   details->connection_info = HttpResponseInfo::CONNECTION_INFO_QUIC1_SPDY3;
   if (was_handshake_confirmed_)
     details->quic_connection_error = quic_connection_error_;
+  if (session_)

[Ryan Hamilton, 2016/03/11 22:48:58]

In the case that there is no session, I wonder if we're going to have missed
this information. In other words, when the session becomes disconnected from the
QuicHttpStream, can we grab the port_migration_detected value and save it in
case PopulateNetErrorDetails is called later.

[Zhongyi Shi, 2016/03/11 23:15:30]

Good point! I changed the method of OnSessionClosed to notify stream to cache
the flag. 

+    session_->PopulateNetErrorDetails(details);
 }
 
 void QuicHttpStream::SetPriority(RequestPriority priority) {