Server push cancellation: add a finch trial parameter

net/quic/core/quic_session.h

 // 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.
 //
 // A QuicSession, which demuxes a single connection to individual streams.
 
 #ifndef NET_QUIC_CORE_QUIC_SESSION_H_
 #define NET_QUIC_CORE_QUIC_SESSION_H_
 
 #include <cstddef>
@@ skipping 34 matching lines @@
    public:
     virtual ~Visitor() {}
 
     // Called when the connection is closed after the streams have been closed.
     virtual void OnConnectionClosed(QuicConnectionId connection_id,
                                     QuicErrorCode error,
                                     const std::string& error_details) = 0;
 
     // Called when the session has become write blocked.
     virtual void OnWriteBlocked(QuicBlockedWriterInterface* blocked_writer) = 0;
+
+    // Called when the session receives reset on a stream from the peer.
+    virtual void OnRstStreamReceived(const QuicRstStreamFrame& frame) = 0;
   };
 
   // CryptoHandshakeEvent enumerates the events generated by a QuicCryptoStream.
   enum CryptoHandshakeEvent {
     // ENCRYPTION_FIRST_ESTABLISHED indicates that a full client hello has been
     // sent by a client and that subsequent packets will be encrypted. (Client
     // only.)
     ENCRYPTION_FIRST_ESTABLISHED,
     // ENCRYPTION_REESTABLISHED indicates that a client hello was rejected by
     // the server and thus the encryption key has been updated. Therefore the
@@ skipping 375 matching lines @@
 
   // Latched value of quic_reloadable_flag_quic_flow_control_invariant.
   const bool flow_control_invariant_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSession);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_QUIC_SESSION_H_