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

net/http2/hpack/decoder/hpack_string_collector.h

-// 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.
-
-#ifndef NET_HTTP2_HPACK_DECODER_HPACK_STRING_COLLECTOR_H_
-#define NET_HTTP2_HPACK_DECODER_HPACK_STRING_COLLECTOR_H_
-
-// Supports tests of decoding HPACK strings.
-
-#include <stddef.h>
-
-#include <iosfwd>
-#include <string>
-
-#include "base/strings/string_piece.h"
-#include "net/http2/hpack/decoder/hpack_string_decoder_listener.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace net {
-namespace test {
-
-// Records the callbacks associated with a decoding a string; must
-// call Clear() between decoding successive strings.
-struct HpackStringCollector : public HpackStringDecoderListener {
-  enum CollectorState {
-    kGenesis,
-    kStarted,
-    kEnded,
-  };
-
-  HpackStringCollector();
-  HpackStringCollector(const std::string& str, bool huffman);
-
-  void Clear();
-  bool IsClear() const;
-  bool IsInProgress() const;
-  bool HasEnded() const;
-
-  void OnStringStart(bool huffman, size_t length) override;
-  void OnStringData(const char* data, size_t length) override;
-  void OnStringEnd() override;
-
-  ::testing::AssertionResult Collected(base::StringPiece str,
-                                       bool is_huffman_encoded) const;
-
-  std::string ToString() const;
-
-  std::string s;
-  size_t len;
-  bool huffman_encoded;
-  CollectorState state;
-};
-
-bool operator==(const HpackStringCollector& a, const HpackStringCollector& b);
-
-bool operator!=(const HpackStringCollector& a, const HpackStringCollector& b);
-
-std::ostream& operator<<(std::ostream& out, const HpackStringCollector& v);
-
-}  // namespace test
-}  // namespace net
-
-#endif  // NET_HTTP2_HPACK_DECODER_HPACK_STRING_COLLECTOR_H_