QuicSession no longer directly owns its QuicConnection. Not flag protected.

net/quic/core/quic_session.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_session.h"
 
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "net/quic/core/crypto/proof_verifier.h"
@@ skipping 22 matching lines @@
       config_(config),
       max_open_outgoing_streams_(kDefaultMaxStreamsPerConnection),
       max_open_incoming_streams_(config_.GetMaxIncomingDynamicStreamsToSend()),
       next_outgoing_stream_id_(perspective() == Perspective::IS_SERVER ? 2 : 3),
       largest_peer_created_stream_id_(
           perspective() == Perspective::IS_SERVER ? 1 : 0),
       num_dynamic_incoming_streams_(0),
       num_draining_incoming_streams_(0),
       num_locally_closed_incoming_streams_highest_offset_(0),
       error_(QUIC_NO_ERROR),
-      flow_controller_(connection_.get(),
+      flow_controller_(connection_,
                        0,
                        perspective(),
                        kMinimumFlowControlSendWindow,
                        config_.GetInitialSessionFlowControlWindowToSend(),
                        perspective() == Perspective::IS_SERVER),
       currently_writing_stream_id_(0) {}
 
 void QuicSession::Initialize() {
   connection_->set_visitor(this);
   connection_->SetFromConfig(config_);
@@ skipping 124 matching lines @@
     }
     if (write_blocked_streams_.headers_stream_blocked()) {
       num_writes += 1;
     }
   }
   if (num_writes == 0) {
     return;
   }
 
   QuicConnection::ScopedPacketBundler ack_bundler(
-      connection_.get(), QuicConnection::SEND_ACK_IF_QUEUED);
+      connection_, QuicConnection::SEND_ACK_IF_QUEUED);
   for (size_t i = 0; i < num_writes; ++i) {
     if (!(write_blocked_streams_.HasWriteBlockedCryptoOrHeadersStream() ||
           write_blocked_streams_.HasWriteBlockedDataStreams())) {
       // Writing one stream removed another!? Something's broken.
       QUIC_BUG << "WriteBlockedStream is missing";
       connection_->CloseConnection(QUIC_INTERNAL_ERROR,
                                    "WriteBlockedStream is missing",
                                    ConnectionCloseBehavior::SILENT_CLOSE);
       return;
     }
@@ skipping 566 matching lines @@
 
 size_t QuicSession::MaxAvailableStreams() const {
   return max_open_incoming_streams_ * kMaxAvailableStreamsMultiplier;
 }
 
 bool QuicSession::IsIncomingStream(QuicStreamId id) const {
   return id % 2 != next_outgoing_stream_id_ % 2;
 }
 
 }  // namespace net