Propagate SetDecoderHeaderTableDebugVisitor to the nested SpdyFramerDecoderAdapter.

net/spdy/spdy_framer_decoder_adapter.h

 // Copyright (c) 2016 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_FRAMER_DECODER_ADAPTER_H_
 #define NET_SPDY_SPDY_FRAMER_DECODER_ADAPTER_H_
 
 #include <stddef.h>
 
 #include "base/strings/string_piece.h"
@@ skipping 19 matching lines @@
 
   // Set debug callbacks to be called from the framer. The debug visitor is
   // completely optional and need not be set in order for normal operation.
   // If this is called multiple times, only the last visitor will be used.
   virtual void set_debug_visitor(
       SpdyFramerDebugVisitorInterface* debug_visitor);
   SpdyFramerDebugVisitorInterface* debug_visitor() const {
     return debug_visitor_;
   }
 
+  // Set debug callbacks to be called from the HPACK decoder.
+  virtual void SetDecoderHeaderTableDebugVisitor(
+      std::unique_ptr<HpackHeaderTable::DebugVisitorInterface> visitor) = 0;
+
   // Sets whether or not ProcessInput returns after finishing a frame, or
   // continues processing additional frames. Normally ProcessInput processes
   // all input, but this method enables the caller (and visitor) to work with
   // a single frame at a time (or that portion of the frame which is provided
   // as input). Reset() does not change the value of this flag.
   virtual void set_process_single_input_frame(bool v);
   bool process_single_input_frame() const {
     return process_single_input_frame_;
   }
 
@@ skipping 97 matching lines @@
   SpdyFramer* framer() const { return framer_; }
 
  private:
   SpdyFramerVisitorInterface* const visitor_;
   SpdyFramer* const framer_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_FRAMER_DECODER_ADAPTER_H_