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

net/tools/flip_server/spdy_interface.h

Index: net/tools/flip_server/spdy_interface.h
diff --git a/net/tools/flip_server/spdy_interface.h b/net/tools/flip_server/spdy_interface.h
index cafad909d49b0c6ac685c4c7b853df0140e30bb5..09d20fab076895d0d7b134922629aff5eb689e8c 100644
--- a/net/tools/flip_server/spdy_interface.h
+++ b/net/tools/flip_server/spdy_interface.h
@@ -113,20 +113,6 @@ class SpdySM : public BufferedSpdyFramerVisitorInterface, public SMInterface {
   // |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 {}