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

net/tools/flip_server/spdy_interface.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.
 
 #ifndef NET_TOOLS_FLIP_SERVER_SPDY_INTERFACE_H_
 #define NET_TOOLS_FLIP_SERVER_SPDY_INTERFACE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 95 matching lines @@
 
   // Called when the other side has finished sending data on this stream.
   // |stream_id| The stream that was receivin data.
   void OnStreamEnd(SpdyStreamId stream_id) override;
 
   // Called when padding is received (padding length field or padding octets).
   // |stream_id| The stream receiving data.
   // |len| The number of padding octets.
   void OnStreamPadding(SpdyStreamId stream_id, size_t len) override;
 
-  // Called just before processing the payload of a frame containing header
-  // data. Should return an implementation of SpdyHeadersHandlerInterface that
-  // will receive headers for stream |stream_id|. The caller will not take
-  // ownership of the headers handler. The same instance should be returned
-  // for all header frames comprising a logical header block (i.e. until
-  // OnHeaderFrameEnd() is called with end_headers == true).
-  SpdyHeadersHandlerInterface* OnHeaderFrameStart(
-      SpdyStreamId stream_id) override;
-
-  // Called after processing the payload of a frame containing header data.
-  // |end_headers| is true if there will not be any subsequent CONTINUATION
-  // frames.
-  void OnHeaderFrameEnd(SpdyStreamId stream_id, bool end_headers) override;
-
   // Called when a SETTINGS frame is received.
   // |clear_persisted| True if the respective flag is set on the SETTINGS frame.
   void OnSettings(bool clear_persisted) override {}
 
   // Called when an individual setting within a SETTINGS frame has been parsed
   // and validated.
   void OnSetting(SpdySettingsIds id, uint8_t flags, uint32_t value) override {}
 
   // Called when a PING frame has been parsed.
   void OnPing(SpdyPingId unique_id, bool is_ack) override {}
@@ skipping 96 matching lines @@
   typedef std::map<uint32_t, SMInterface*> StreamToSmif;
   StreamToSmif stream_to_smif_;
   bool close_on_error_;
 
   static std::string forward_ip_header_;
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_FLIP_SERVER_SPDY_INTERFACE_H_