Quic use reduced PING timeout when previous connection times out with open streams

net/quic/core/quic_connection.cc

Index: net/quic/core/quic_connection.cc
diff --git a/net/quic/core/quic_connection.cc b/net/quic/core/quic_connection.cc
index 890faaf662acca5e6c516b41b7e82b5a2814b9e0..393c1c7ffdc68cdbb2e5176e7e538cf1fb34db2e 100644
--- a/net/quic/core/quic_connection.cc
+++ b/net/quic/core/quic_connection.cc
@@ -231,6 +231,7 @@ QuicConnection::QuicConnection(QuicConnectionId connection_id,
       delay_setting_retransmission_alarm_(false),
       pending_retransmission_alarm_(false),
       defer_send_in_response_to_packets_(false),
+      ping_timeout_(QuicTime::Delta::FromSeconds(kPingTimeoutSecs)),
       arena_(),
       ack_alarm_(alarm_factory_->CreateAlarm(arena_.New<AckAlarmDelegate>(this),
                                              &arena_)),
@@ -2227,8 +2228,7 @@ void QuicConnection::SetPingAlarm() {
     // Don't send a ping unless there are open streams.
     return;
   }
-  QuicTime::Delta ping_timeout = QuicTime::Delta::FromSeconds(kPingTimeoutSecs);
-  ping_alarm_->Update(clock_->ApproximateNow() + ping_timeout,
+  ping_alarm_->Update(clock_->ApproximateNow() + ping_timeout_,
                       QuicTime::Delta::FromSeconds(1));
 }