Log compressed size of HTTP/2 requests.

net/spdy/spdy_no_op_visitor.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.
 //
 // SpdyNoOpVisitor implements several of the visitor and handler interfaces
 // to make it easier to write tests that need to provide instances. Other
 // interfaces can be added as needed.
 
 #ifndef NET_SPDY_SPDY_NO_OP_VISITOR_H_
 #define NET_SPDY_SPDY_NO_OP_VISITOR_H_
@@ skipping 69 matching lines @@
                              size_t payload_len,
                              size_t frame_len) override {}
   void OnReceiveCompressedFrame(SpdyStreamId stream_id,
                                 SpdyFrameType type,
                                 size_t frame_len) override {}
 
   // SpdyHeadersHandlerInterface methods:
   void OnHeaderBlockStart() override {}
   void OnHeader(base::StringPiece key, base::StringPiece value) override {}
   void OnHeaderBlockEnd(size_t uncompressed_header_bytes) override {}
+  void OnHeaderBlockEnd(size_t /* uncompressed_header_bytes */,
+                        size_t /* compressed_header_bytes */) override {}
 };
 
 }  // namespace test
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_NO_OP_VISITOR_H_