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

net/tools/quic/quic_client_base.h

 // Copyright (c) 2015 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.
 //
 // A base class for the toy client, which connects to a specified port and sends
 // QUIC request to that endpoint.
 
 #ifndef NET_TOOLS_QUIC_QUIC_CLIENT_BASE_H_
 #define NET_TOOLS_QUIC_QUIC_CLIENT_BASE_H_
 
@@ skipping 147 matching lines @@
 
   ProofVerifier* proof_verifier() const;
 
   void set_session(QuicClientSession* session) { session_.reset(session); }
 
   QuicClientPushPromiseIndex* push_promise_index() {
     return &push_promise_index_;
   }
 
  protected:
+  // Takes ownership of |connection|.
   virtual QuicClientSession* CreateQuicClientSession(
       QuicConnection* connection);
 
   // Generates the next ConnectionId for |server_id_|.  By default, if the
   // cached server config contains a server-designated ID, that ID will be
   // returned.  Otherwise, the next random ID will be returned.
   QuicConnectionId GetNextConnectionId();
 
   // Returns the next server-designated ConnectionId from the cached config for
   // |server_id_|, if it exists.  Otherwise, returns 0.
@@ skipping 70 matching lines @@
   bool connected_or_attempting_connect_;
 
   QuicClientPushPromiseIndex push_promise_index_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicClientBase);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_CLIENT_BASE_H_