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

net/quic/quic_spdy_stream.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/quic_spdy_stream.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 384 matching lines @@
 }
 
 SpdyPriority QuicSpdyStream::priority() const {
   return priority_;
 }
 
 void QuicSpdyStream::ClearSession() {
   spdy_session_ = nullptr;
 }
 
+QuicConsumedData QuicSpdyStream::WritevDataInner(
+    QuicIOVector iov,
+    QuicStreamOffset offset,
+    bool fin,
+    QuicAckListenerInterface* ack_notifier_delegate) {
+  if (spdy_session_->headers_stream() != nullptr &&
+      spdy_session_->force_hol_blocking()) {
+    return spdy_session_->headers_stream()->WritevStreamData(
+        id(), iov, offset, fin, ack_notifier_delegate);
+  }
+  return ReliableQuicStream::WritevDataInner(iov, offset, fin,
+                                             ack_notifier_delegate);
+}
+
 }  // namespace net