Adds QUIC_VERSION_36 which adds support to force HOL blocking between streams for measurement purpo…

net/quic/reliable_quic_stream.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.
 //
 // The base class for client/server reliable streams.
 
 // It does not contain the entire interface needed by an application to interact
 // with a QUIC stream.  Some parts of the interface must be obtained by
 // accessing the owning session object.  A subclass of ReliableQuicStream
 // connects the object and the application that generates and consumes the data
@@ skipping 173 matching lines @@
   // Sends as many bytes in the first |count| buffers of |iov| to the connection
   // as the connection will consume.
   // If |ack_listener| is provided, then it will be notified once all
   // the ACKs for this write have been received.
   // Returns the number of bytes consumed by the connection.
   QuicConsumedData WritevData(const struct iovec* iov,
                               int iov_count,
                               bool fin,
                               QuicAckListenerInterface* ack_listener);
 
+  // Allows override of the session level writev, for the force HOL
+  // blocking experiment.
+  virtual QuicConsumedData WritevDataInner(
+      QuicIOVector iov,
+      QuicStreamOffset offset,
+      bool fin,
+      QuicAckListenerInterface* ack_notifier_delegate);
+
   // Close the write side of the socket.  Further writes will fail.
   // Can be called by the subclass or internally.
   // Does not send a FIN.  May cause the stream to be closed.
   virtual void CloseWriteSide();
 
   bool fin_buffered() const { return fin_buffered_; }
 
   const QuicSession* session() const { return session_; }
   QuicSession* session() { return session_; }
 
@@ skipping 91 matching lines @@
   // connection level flow control limits (but are stream level flow control
   // limited).
   bool stream_contributes_to_connection_flow_control_;
 
   DISALLOW_COPY_AND_ASSIGN(ReliableQuicStream);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_RELIABLE_QUIC_STREAM_H_