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

net/quic/quic_spdy_stream.h

 // 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.
 //
 // The base class for streams which deliver data to/from an application.
 // In each direction, the data on such a stream first contains compressed
 // headers then body data.
 
 #ifndef NET_QUIC_QUIC_SPDY_STREAM_H_
 #define NET_QUIC_QUIC_SPDY_STREAM_H_
@@ skipping 192 matching lines @@
                                         const QuicHeaderList& header_list);
   virtual void OnTrailingHeadersComplete(bool fin,
                                          size_t frame_len,
                                          const QuicHeaderList& header_list);
   QuicSpdySession* spdy_session() const { return spdy_session_; }
   Visitor* visitor() { return visitor_; }
 
   // Returns true if headers have been fully read and consumed.
   bool FinishedReadingHeaders() const;
 
+  // Redirects to the headers stream if force HOL blocking enabled,
+  // otherwise just pass through.
+  QuicConsumedData WritevDataInner(
+      QuicIOVector iov,
+      QuicStreamOffset offset,
+      bool fin,
+      QuicAckListenerInterface* ack_notifier_delegate) override;
+
  private:
   friend class test::QuicSpdyStreamPeer;
   friend class test::ReliableQuicStreamPeer;
   friend class QuicStreamUtils;
 
   // Returns true if trailers have been fully read and consumed.
   bool FinishedReadingTrailers() const;
 
   QuicSpdySession* spdy_session_;
 
@@ skipping 18 matching lines @@
   std::string decompressed_trailers_;
   // The parsed trailers received from the peer.
   SpdyHeaderBlock received_trailers_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSpdyStream);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_SPDY_STREAM_H_