Remove dependency on headers stream from QuicSession.

net/quic/quic_connection.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_connection.h"
 
 #include <string.h>
 #include <sys/types.h>
 
 #include <algorithm>
@@ skipping 2083 matching lines @@
 
   timeout_alarm_->Cancel();
   timeout_alarm_->Set(deadline);
 }
 
 void QuicConnection::SetPingAlarm() {
   if (perspective_ == Perspective::IS_SERVER) {
     // Only clients send pings.
     return;
   }
-  if (!visitor_->HasOpenDataStreams()) {
+  if (!visitor_->HasOpenDynamicStreams()) {
     ping_alarm_->Cancel();
     // Don't send a ping unless there are open streams.
     return;
   }
   QuicTime::Delta ping_timeout = QuicTime::Delta::FromSeconds(kPingTimeoutSecs);
   ping_alarm_->Update(clock_->ApproximateNow().Add(ping_timeout),
                       QuicTime::Delta::FromSeconds(1));
 }
 
 QuicConnection::ScopedPacketBundler::ScopedPacketBundler(
@@ skipping 54 matching lines @@
   }
   for (const QuicFrame& frame : retransmittable_frames->frames()) {
     if (frame.type == CONNECTION_CLOSE_FRAME) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace net