QUIC - disable QUIC under recent pathological connection errors.

net/quic/quic_client_session.cc

Index: net/quic/quic_client_session.cc
diff --git a/net/quic/quic_client_session.cc b/net/quic/quic_client_session.cc
index 57a5393d734e359f50ef96f0b2fe6ccf6965f1f1..4858bdf09cd402feed1eac06f62381140783ea6c 100644
--- a/net/quic/quic_client_session.cc
+++ b/net/quic/quic_client_session.cc
@@ -184,6 +184,7 @@ QuicClientSession::QuicClientSession(
       dns_resolution_end_time_(dns_resolution_end_time),
       logger_(new QuicConnectionLogger(this, connection_description, net_log_)),
       going_away_(false),
+      epitaph_(QUIC_EPITAPH_RIP),
       weak_factory_(this) {
   crypto_stream_.reset(
       crypto_client_stream_factory
@@ -676,6 +677,7 @@ void QuicClientSession::OnConnectionClosed(QuicErrorCode error,
         GetNumOpenStreams());
     if (IsCryptoHandshakeConfirmed()) {
       if (GetNumOpenStreams() > 0) {
+        epitaph_ = QUIC_EPITAPH_TIMEOUT_STREAMS_OPEN;
         UMA_HISTOGRAM_BOOLEAN(
             "Net.QuicSession.TimedOutWithOpenStreams.HasUnackedPackets",
             connection()->sent_packet_manager().HasUnackedPackets());
@@ -708,7 +710,11 @@ void QuicClientSession::OnConnectionClosed(QuicErrorCode error,
     }
   }
 
-  if (!IsCryptoHandshakeConfirmed()) {
+  bool crypto_handshake_confirmed = IsCryptoHandshakeConfirmed();
+  if (error == QUIC_PUBLIC_RESET && crypto_handshake_confirmed) {
+    epitaph_ = QUIC_EPITAPH_PUBLIC_RESET_POST_HANDSHAKE;
+  }
+  if (!crypto_handshake_confirmed) {
     if (error == QUIC_PUBLIC_RESET) {
       RecordHandshakeFailureReason(HANDSHAKE_FAILURE_PUBLIC_RESET);
     } else if (connection()->GetStats().packets_received == 0) {