Revert of 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 09d20fab076895d0d7b134922629aff5eb689e8c..cafad909d49b0c6ac685c4c7b853df0140e30bb5 100644
--- a/net/tools/flip_server/spdy_interface.h
+++ b/net/tools/flip_server/spdy_interface.h
@@ -112,6 +112,20 @@
   // |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.