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

net/quic/quic_config.h

Index: net/quic/quic_config.h
diff --git a/net/quic/quic_config.h b/net/quic/quic_config.h
index ddafce4c87ac192b7ca4615756a6c55b1d6c2b2f..5baeb338733dc8da53d84cb2d235b5896d5c88f5 100644
--- a/net/quic/quic_config.h
+++ b/net/quic/quic_config.h
@@ -386,6 +386,10 @@ class NET_EXPORT_PRIVATE QuicConfig {
 
   const IPEndPoint& ReceivedAlternateServerAddress() const;
 
+  void SetForceHolBlocking();
+
+  bool ForceHolBlocking(Perspective perspective) const;
+
   bool negotiated() const;
 
   // ToHandshakeMessage serialises the settings in this object as a series of
@@ -445,6 +449,9 @@ class NET_EXPORT_PRIVATE QuicConfig {
 
   // An alternate server address the client could connect to.
   QuicFixedIPEndPoint alternate_server_address_;
+
+  // Force HOL blocking for measurement purposes.
+  QuicFixedUint32 force_hol_blocking_;
 };
 
 }  // namespace net