In QUIC, send data is copied to streams rather than frames. Protected by FLAGS_quic_reloadable_flag…

net/quic/core/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/core/quic_connection.h"
 
 #include <string.h>
 #include <sys/types.h>
 
 #include <algorithm>
@@ skipping 2423 matching lines @@
       !visitor_->WillingAndAbleToWrite()) {
     sent_packet_manager_.OnApplicationLimited();
   }
 }
 
 void QuicConnection::SetStreamNotifier(
     StreamNotifierInterface* stream_notifier) {
   sent_packet_manager_.SetStreamNotifier(stream_notifier);
 }
 
+void QuicConnection::SetDelegateSavesData(bool delegate_saves_data) {
+  packet_generator_.SetDelegateSavesData(delegate_saves_data);
+}
+
+void QuicConnection::SaveStreamData(QuicStreamId id,
+                                    QuicIOVector iov,
+                                    size_t iov_offset,
+                                    QuicStreamOffset offset,
+                                    QuicByteCount data_length) {
+  visitor_->SaveStreamData(id, iov, iov_offset, offset, data_length);
+}
+
+bool QuicConnection::WriteStreamData(QuicStreamId id,
+                                     QuicStreamOffset offset,
+                                     QuicByteCount data_length,
+                                     QuicDataWriter* writer) {
+  return visitor_->WriteStreamData(id, offset, data_length, writer);
+}
+
 }  // namespace net