Revert of Add new HTTP/2 and HPACK decoder in net/http2/.

net/http2/hpack/decoder/hpack_string_decoder_listener.cc

-// Copyright 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.
-
-#include "net/http2/hpack/decoder/hpack_string_decoder_listener.h"
-
-#include "base/logging.h"
-
-namespace net {
-namespace test {
-
-void HpackStringDecoderVLoggingListener::OnStringStart(bool huffman_encoded,
-                                                       size_t len) {
-  VLOG(1) << "OnStringStart: H=" << huffman_encoded << ", len=" << len;
-  if (wrapped_) {
-    wrapped_->OnStringStart(huffman_encoded, len);
-  }
-}
-
-void HpackStringDecoderVLoggingListener::OnStringData(const char* data,
-                                                      size_t len) {
-  VLOG(1) << "OnStringData: len=" << len;
-  if (wrapped_) {
-    return wrapped_->OnStringData(data, len);
-  }
-}
-
-void HpackStringDecoderVLoggingListener::OnStringEnd() {
-  VLOG(1) << "OnStringEnd";
-  if (wrapped_) {
-    return wrapped_->OnStringEnd();
-  }
-}
-
-}  // namespace test
-}  // namespace net