Avoids the "re-encode HPACK as SPDY3" step.

net/quic/quic_chromium_client_stream.h

 // 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.
 //
 // NOTE: This code is not shared between Google and Chrome.
 
 #ifndef NET_QUIC_QUIC_CHROMIUM_CLIENT_STREAM_H_
 #define NET_QUIC_QUIC_CHROMIUM_CLIENT_STREAM_H_
 
 #include <stddef.h>
@@ skipping 47 matching lines @@
   };
 
   QuicChromiumClientStream(QuicStreamId id,
                            QuicClientSessionBase* session,
                            const BoundNetLog& net_log);
 
   ~QuicChromiumClientStream() override;
 
   // QuicSpdyStream
   void OnStreamHeadersComplete(bool fin, size_t frame_len) override;
+  void OnInitialHeadersComplete(bool fin,
+                                size_t frame_len,
+                                const QuicHeaderList& header_list) override;
+  void OnTrailingHeadersComplete(bool fin,
+                                 size_t frame_len,
+                                 const QuicHeaderList& header_list) override;
   void OnPromiseHeadersComplete(QuicStreamId promised_stream_id,
                                 size_t frame_len) override;
   void OnDataAvailable() override;
   void OnClose() override;
   void OnCanWrite() override;
   size_t WriteHeaders(const SpdyHeaderBlock& header_block,
                       bool fin,
                       QuicAckListenerInterface* ack_notifier_delegate) override;
   SpdyPriority priority() const override;
 
@@ skipping 61 matching lines @@
   std::deque<base::Closure> delegate_tasks_;
 
   base::WeakPtrFactory<QuicChromiumClientStream> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicChromiumClientStream);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CHROMIUM_CLIENT_STREAM_H_