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

net/spdy/spdy_session.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_SPDY_SPDY_SESSION_H_
 #define NET_SPDY_SPDY_SESSION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 81 matching lines @@
   SPDY_ERROR_ZLIB_INIT_FAILURE = 3,
   SPDY_ERROR_UNSUPPORTED_VERSION = 4,
   SPDY_ERROR_DECOMPRESS_FAILURE = 5,
   SPDY_ERROR_COMPRESS_FAILURE = 6,
   SPDY_ERROR_GOAWAY_FRAME_CORRUPT = 29,
   SPDY_ERROR_RST_STREAM_FRAME_CORRUPT = 30,
   SPDY_ERROR_INVALID_PADDING = 39,
   SPDY_ERROR_INVALID_DATA_FRAME_FLAGS = 8,
   SPDY_ERROR_INVALID_CONTROL_FRAME_FLAGS = 9,
   SPDY_ERROR_UNEXPECTED_FRAME = 31,
+  SPDY_ERROR_INTERNAL_FRAMER_ERROR = 41,
   SPDY_ERROR_INVALID_CONTROL_FRAME_SIZE = 37,
   SPDY_ERROR_INVALID_STREAM_ID = 38,
   // SpdyRstStreamStatus mappings.
   // RST_STREAM_INVALID not mapped.
   STATUS_CODE_PROTOCOL_ERROR = 11,
   STATUS_CODE_INVALID_STREAM = 12,
   STATUS_CODE_REFUSED_STREAM = 13,
   STATUS_CODE_UNSUPPORTED_VERSION = 14,
   STATUS_CODE_CANCEL = 15,
   STATUS_CODE_INTERNAL_ERROR = 16,
@@ skipping 21 matching lines @@
 };
 SpdyProtocolErrorDetails NET_EXPORT_PRIVATE
     MapFramerErrorToProtocolError(SpdyFramer::SpdyError error);
 Error NET_EXPORT_PRIVATE MapFramerErrorToNetError(SpdyFramer::SpdyError error);
 SpdyProtocolErrorDetails NET_EXPORT_PRIVATE
     MapRstStreamStatusToProtocolError(SpdyRstStreamStatus status);
 SpdyGoAwayStatus NET_EXPORT_PRIVATE MapNetErrorToGoAwayStatus(Error err);
 
 // If these compile asserts fail then SpdyProtocolErrorDetails needs
 // to be updated with new values, as do the mapping functions above.
-static_assert(15 == SpdyFramer::LAST_ERROR,
+static_assert(16 == SpdyFramer::LAST_ERROR,
               "SpdyProtocolErrorDetails / Spdy Errors mismatch");
 static_assert(17 == RST_STREAM_NUM_STATUS_CODES,
               "SpdyProtocolErrorDetails / RstStreamStatus mismatch");
 
 // Splits pushed |headers| into request and response parts. Request headers are
 // the headers specifying resource URL.
 void NET_EXPORT_PRIVATE
     SplitPushedHeadersToRequestAndResponse(const SpdyHeaderBlock& headers,
                                            SpdyMajorVersion protocol_version,
                                            SpdyHeaderBlock* request_headers,
@@ skipping 724 matching lines @@
                 SpdyGoAwayStatus status,
                 base::StringPiece debug_data) override;
   void OnDataFrameHeader(SpdyStreamId stream_id,
                          size_t length,
                          bool fin) override;
   void OnStreamFrameData(SpdyStreamId stream_id,
                          const char* data,
                          size_t len) override;
   void OnStreamEnd(SpdyStreamId stream_id) override;
   void OnStreamPadding(SpdyStreamId stream_id, size_t len) override;
-  SpdyHeadersHandlerInterface* OnHeaderFrameStart(
-      SpdyStreamId stream_id) override;
-  void OnHeaderFrameEnd(SpdyStreamId stream_id, bool end_headers) override;
   void OnSettings(bool clear_persisted) override;
   void OnSetting(SpdySettingsIds id, uint8_t flags, uint32_t value) override;
   void OnWindowUpdate(SpdyStreamId stream_id, int delta_window_size) override;
   void OnPushPromise(SpdyStreamId stream_id,
                      SpdyStreamId promised_stream_id,
                      const SpdyHeaderBlock& headers) override;
   void OnSynStream(SpdyStreamId stream_id,
                    SpdyStreamId associated_stream_id,
                    SpdyPriority priority,
                    bool fin,
@@ skipping 332 matching lines @@
   // Used for posting asynchronous IO tasks.  We use this even though
   // SpdySession is refcounted because we don't need to keep the SpdySession
   // alive if the last reference is within a RunnableMethod.  Just revoke the
   // method.
   base::WeakPtrFactory<SpdySession> weak_factory_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_SESSION_H_