relnote: Add QUIC connection option DHDT to disable HPACK dynamic table. Guarded by FLAGS

net/quic/quic_spdy_session.cc

 // 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.
 
 #include "net/quic/quic_spdy_session.h"
 
 #include "net/quic/quic_bug_tracker.h"
 #include "net/quic/quic_headers_stream.h"
 
 using std::string;
@@ skipping 95 matching lines @@
 
 void QuicSpdySession::OnPromiseHeadersComplete(QuicStreamId stream_id,
                                                QuicStreamId promised_stream_id,
                                                size_t frame_len) {
   string error = "OnPromiseHeadersComplete should be overriden in client code.";
   QUIC_BUG << error;
   connection()->CloseConnection(QUIC_INTERNAL_ERROR, error,
                                 ConnectionCloseBehavior::SILENT_CLOSE);
 }
 
+void QuicSpdySession::OnConfigNegotiated() {
+  QuicSession::OnConfigNegotiated();
+  if (FLAGS_quic_disable_hpack_dynamic_table &&
+      config()->HasClientSentConnectionOption(kDHDT, perspective())) {
+    headers_stream_->DisableHpackDynamicTable();
+  }
+}
+
 }  // namespace net