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

net/quic/core/quic_server_session_base_test.cc

 // Copyright 2013 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_server_session_base.h"
 
 #include <cstdint>
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 68 matching lines @@
                     QuicServerSessionBase::Helper* helper,
                     const QuicCryptoServerConfig* crypto_config,
                     QuicCompressedCertsCache* compressed_certs_cache)
       : QuicServerSessionBase(config,
                               connection,
                               visitor,
                               helper,
                               crypto_config,
                               compressed_certs_cache) {}
 
-  ~TestServerSession() override{};
+  ~TestServerSession() override { delete connection(); };
 
  protected:
   QuicSpdyStream* CreateIncomingDynamicStream(QuicStreamId id) override {
     if (!ShouldCreateIncomingDynamicStream(id)) {
       return nullptr;
     }
     QuicSpdyStream* stream = new QuicSimpleServerStream(id, this);
     ActivateStream(stream);
     return stream;
   }
@@ skipping 457 matching lines @@
   EXPECT_FALSE(
       QuicServerSessionBasePeer::IsBandwidthResumptionEnabled(session_.get()));
   session_->OnConfigNegotiated();
   EXPECT_FALSE(
       QuicServerSessionBasePeer::IsBandwidthResumptionEnabled(session_.get()));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net