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

net/quic/quic_spdy_session.h

 // Copyright (c) 2015 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.
 
 #ifndef NET_QUIC_QUIC_SPDY_SESSION_H_
 #define NET_QUIC_QUIC_SPDY_SESSION_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 82 matching lines @@
   void RegisterStreamPriority(QuicStreamId id, SpdyPriority priority);
   // Called by the stream on deletion to clear priority crom the write blocked
   // list.
   void UnregisterStreamPriority(QuicStreamId id);
   // Called by the stream on SetPriority to update priority on the write blocked
   // list.
   void UpdateStreamPriority(QuicStreamId id, SpdyPriority new_priority);
 
   void OnConfigNegotiated() override;
 
+  // Called by |headers_stream_| when |force_hol_blocking_| is true.
+  virtual void OnStreamFrameData(QuicStreamId stream_id,
+                                 const char* data,
+                                 size_t len,
+                                 bool fin);
+
+  bool force_hol_blocking() const { return force_hol_blocking_; }
+
  protected:
   // Override CreateIncomingDynamicStream() and CreateOutgoingDynamicStream()
   // with QuicSpdyStream return type to make sure that all data streams are
   // QuicSpdyStreams.
   QuicSpdyStream* CreateIncomingDynamicStream(QuicStreamId id) override = 0;
   QuicSpdyStream* CreateOutgoingDynamicStream(SpdyPriority priority) override =
       0;
 
   QuicSpdyStream* GetSpdyDataStream(const QuicStreamId stream_id);
 
   // If an incoming stream can be created, return true.
   virtual bool ShouldCreateIncomingDynamicStream(QuicStreamId id) = 0;
 
   // If an outgoing stream can be created, return true.
   virtual bool ShouldCreateOutgoingDynamicStream() = 0;
 
  private:
   friend class test::QuicSpdySessionPeer;
 
   std::unique_ptr<QuicHeadersStream> headers_stream_;
 
+  // If set, redirect all data through the headers stream in order to
+  // simulate forced HOL blocking between streams as happens in
+  // HTTP/2 over TCP.
+  bool force_hol_blocking_;
+
   DISALLOW_COPY_AND_ASSIGN(QuicSpdySession);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_SPDY_SESSION_H_