Adds QUIC_VERSION_24 which uses SPDY/4 header compression instead of SPDY/3.

net/quic/quic_session.cc

 // 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.
 
 #include "net/quic/quic_session.h"
 
 #include "base/stl_util.h"
 #include "net/quic/crypto/proof_verifier.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_flow_controller.h"
@@ skipping 218 matching lines @@
     it->second->OnConnectionClosed(error, from_peer);
     // The stream should call CloseStream as part of OnConnectionClosed.
     if (stream_map_.find(id) != stream_map_.end()) {
       LOG(DFATAL) << ENDPOINT
                   << "Stream failed to close under OnConnectionClosed";
       CloseStream(id);
     }
   }
 }
 
+void QuicSession::OnSuccessfulVersionNegotiation(const QuicVersion& version) {
+  headers_stream_->OnSuccessfulVersionNegotiation(version);
+}
+
 void QuicSession::OnWindowUpdateFrames(
     const vector<QuicWindowUpdateFrame>& frames) {
   bool connection_window_updated = false;
   for (size_t i = 0; i < frames.size(); ++i) {
     // Stream may be closed by the time we receive a WINDOW_UPDATE, so we can't
     // assume that it still exists.
     QuicStreamId stream_id = frames[i].stream_id;
     if (stream_id == kConnectionLevelId) {
       // This is a window update that applies to the connection, rather than an
       // individual stream.
@@ skipping 488 matching lines @@
   for (DataStreamMap::iterator it = stream_map_.begin();
        it != stream_map_.end(); ++it) {
     if (it->second->flow_controller()->IsBlocked()) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace net