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

net/http2/decoder/payload_decoders/settings_payload_decoder.cc

Index: net/http2/decoder/payload_decoders/settings_payload_decoder.cc
diff --git a/net/http2/decoder/payload_decoders/settings_payload_decoder.cc b/net/http2/decoder/payload_decoders/settings_payload_decoder.cc
deleted file mode 100644
index f8cc52cb48605086f33b2ed13658f207148cc488..0000000000000000000000000000000000000000
--- a/net/http2/decoder/payload_decoders/settings_payload_decoder.cc
+++ /dev/null
@@ -1,97 +0,0 @@
-// 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/decoder/payload_decoders/settings_payload_decoder.h"
-
-#include "base/logging.h"
-#include "net/http2/decoder/decode_buffer.h"
-#include "net/http2/decoder/http2_frame_decoder_listener.h"
-#include "net/http2/http2_constants.h"
-#include "net/http2/http2_structures.h"
-
-namespace net {
-
-DecodeStatus SettingsPayloadDecoder::StartDecodingPayload(
-    FrameDecoderState* state,
-    DecodeBuffer* db) {
-  const Http2FrameHeader& frame_header = state->frame_header();
-  const uint32_t total_length = frame_header.payload_length;
-
-  DVLOG(2) << "SettingsPayloadDecoder::StartDecodingPayload: " << frame_header;
-  DCHECK_EQ(Http2FrameType::SETTINGS, frame_header.type);
-  DCHECK_LE(db->Remaining(), total_length);
-  DCHECK_EQ(0, frame_header.flags & ~(Http2FrameFlag::FLAG_ACK));
-
-  if (frame_header.IsAck()) {
-    if (total_length == 0) {
-      state->listener()->OnSettingsAck(frame_header);
-      return DecodeStatus::kDecodeDone;
-    } else {
-      state->InitializeRemainders();
-      return state->ReportFrameSizeError();
-    }
-  } else {
-    state->InitializeRemainders();
-    state->listener()->OnSettingsStart(frame_header);
-    return StartDecodingSettings(state, db);
-  }
-}
-
-DecodeStatus SettingsPayloadDecoder::ResumeDecodingPayload(
-    FrameDecoderState* state,
-    DecodeBuffer* db) {
-  DVLOG(2) << "SettingsPayloadDecoder::ResumeDecodingPayload"
-           << "  remaining_payload=" << state->remaining_payload()
-           << "  db->Remaining=" << db->Remaining();
-  DCHECK_EQ(Http2FrameType::SETTINGS, state->frame_header().type);
-  DCHECK_LE(db->Remaining(), state->frame_header().payload_length);
-
-  DecodeStatus status =
-      state->ResumeDecodingStructureInPayload(&setting_fields_, db);
-  if (status == DecodeStatus::kDecodeDone) {
-    state->listener()->OnSetting(setting_fields_);
-    return StartDecodingSettings(state, db);
-  }
-  return HandleNotDone(state, db, status);
-}
-
-DecodeStatus SettingsPayloadDecoder::StartDecodingSettings(
-    FrameDecoderState* state,
-    DecodeBuffer* db) {
-  DVLOG(2) << "SettingsPayloadDecoder::StartDecodingSettings"
-           << "  remaining_payload=" << state->remaining_payload()
-           << "  db->Remaining=" << db->Remaining();
-  while (state->remaining_payload() > 0) {
-    DecodeStatus status =
-        state->StartDecodingStructureInPayload(&setting_fields_, db);
-    if (status == DecodeStatus::kDecodeDone) {
-      state->listener()->OnSetting(setting_fields_);
-      continue;
-    }
-    return HandleNotDone(state, db, status);
-  }
-  DVLOG(2) << "LEAVING SettingsPayloadDecoder::StartDecodingSettings"
-           << "\n\tdb->Remaining=" << db->Remaining()
-           << "\n\t remaining_payload=" << state->remaining_payload();
-  state->listener()->OnSettingsEnd();
-  return DecodeStatus::kDecodeDone;
-}
-
-DecodeStatus SettingsPayloadDecoder::HandleNotDone(FrameDecoderState* state,
-                                                   DecodeBuffer* db,
-                                                   DecodeStatus status) {
-  // Not done decoding the structure. Either we've got more payload to decode,
-  // or we've run out because the payload is too short, in which case
-  // OnFrameSizeError will have already been called.
-  DCHECK(
-      (status == DecodeStatus::kDecodeInProgress &&
-       state->remaining_payload() > 0) ||
-      (status == DecodeStatus::kDecodeError && state->remaining_payload() == 0))
-      << "\n status=" << status
-      << "; remaining_payload=" << state->remaining_payload()
-      << "; db->Remaining=" << db->Remaining();
-  return status;
-}
-
-}  // namespace net