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

net/http2/decoder/payload_decoders/push_promise_payload_decoder.cc

Index: net/http2/decoder/payload_decoders/push_promise_payload_decoder.cc
diff --git a/net/http2/decoder/payload_decoders/push_promise_payload_decoder.cc b/net/http2/decoder/payload_decoders/push_promise_payload_decoder.cc
deleted file mode 100644
index f160d1eee2074853886655a405f32a3d5192a35b..0000000000000000000000000000000000000000
--- a/net/http2/decoder/payload_decoders/push_promise_payload_decoder.cc
+++ /dev/null
@@ -1,172 +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/push_promise_payload_decoder.h"
-
-#include <stddef.h>
-
-#include "base/logging.h"
-#include "base/macros.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"
-#include "net/http2/tools/http2_bug_tracker.h"
-
-namespace net {
-
-std::ostream& operator<<(std::ostream& out,
-                         PushPromisePayloadDecoder::PayloadState v) {
-  switch (v) {
-    case PushPromisePayloadDecoder::PayloadState::kReadPadLength:
-      return out << "kReadPadLength";
-    case PushPromisePayloadDecoder::PayloadState::
-        kStartDecodingPushPromiseFields:
-      return out << "kStartDecodingPushPromiseFields";
-    case PushPromisePayloadDecoder::PayloadState::kReadPayload:
-      return out << "kReadPayload";
-    case PushPromisePayloadDecoder::PayloadState::kSkipPadding:
-      return out << "kSkipPadding";
-    case PushPromisePayloadDecoder::PayloadState::
-        kResumeDecodingPushPromiseFields:
-      return out << "kResumeDecodingPushPromiseFields";
-  }
-  return out << static_cast<int>(v);
-}
-
-DecodeStatus PushPromisePayloadDecoder::StartDecodingPayload(
-    FrameDecoderState* state,
-    DecodeBuffer* db) {
-  const Http2FrameHeader& frame_header = state->frame_header();
-  const uint32_t total_length = frame_header.payload_length;
-
-  DVLOG(2) << "PushPromisePayloadDecoder::StartDecodingPayload: "
-           << frame_header;
-
-  DCHECK_EQ(Http2FrameType::PUSH_PROMISE, frame_header.type);
-  DCHECK_LE(db->Remaining(), total_length);
-  DCHECK_EQ(
-      0, frame_header.flags &
-             ~(Http2FrameFlag::FLAG_END_HEADERS | Http2FrameFlag::FLAG_PADDED));
-
-  if (!frame_header.IsPadded()) {
-    // If it turns out that PUSH_PROMISE frames without padding are sufficiently
-    // common, and that they are usually short enough that they fit entirely
-    // into one DecodeBuffer, we can detect that here and implement a special
-    // case, avoiding the state machine in ResumeDecodingPayload.
-    payload_state_ = PayloadState::kStartDecodingPushPromiseFields;
-  } else {
-    payload_state_ = PayloadState::kReadPadLength;
-  }
-  state->InitializeRemainders();
-  return ResumeDecodingPayload(state, db);
-}
-
-DecodeStatus PushPromisePayloadDecoder::ResumeDecodingPayload(
-    FrameDecoderState* state,
-    DecodeBuffer* db) {
-  DVLOG(2) << "UnknownPayloadDecoder::ResumeDecodingPayload"
-           << "  remaining_payload=" << state->remaining_payload()
-           << "  db->Remaining=" << db->Remaining();
-
-  const Http2FrameHeader& frame_header = state->frame_header();
-  DCHECK_EQ(Http2FrameType::PUSH_PROMISE, frame_header.type);
-  DCHECK_LE(state->remaining_payload(), frame_header.payload_length);
-  DCHECK_LE(db->Remaining(), frame_header.payload_length);
-
-  DecodeStatus status;
-  while (true) {
-    DVLOG(2)
-        << "PushPromisePayloadDecoder::ResumeDecodingPayload payload_state_="
-        << payload_state_;
-    switch (payload_state_) {
-      case PayloadState::kReadPadLength:
-        DCHECK_EQ(state->remaining_payload(), frame_header.payload_length);
-        // ReadPadLength handles the OnPadLength callback, and updating the
-        // remaining_payload and remaining_padding fields. If the amount of
-        // padding is too large to fit in the frame's payload, ReadPadLength
-        // instead calls OnPaddingTooLong and returns kDecodeError.
-        // Suppress the call to OnPadLength because we haven't yet called
-        // OnPushPromiseStart, which needs to wait until we've decoded the
-        // Promised Stream ID.
-        status = state->ReadPadLength(db, /*report_pad_length*/ false);
-        if (status != DecodeStatus::kDecodeDone) {
-          payload_state_ = PayloadState::kReadPadLength;
-          return status;
-        }
-      // FALLTHROUGH_INTENDED
-
-      case PayloadState::kStartDecodingPushPromiseFields:
-        status =
-            state->StartDecodingStructureInPayload(&push_promise_fields_, db);
-        if (status != DecodeStatus::kDecodeDone) {
-          payload_state_ = PayloadState::kResumeDecodingPushPromiseFields;
-          return status;
-        }
-        // Finished decoding the Promised Stream ID. Can now tell the listener
-        // that we're starting to decode a PUSH_PROMISE frame.
-        ReportPushPromise(state);
-      // FALLTHROUGH_INTENDED
-
-      case PayloadState::kReadPayload:
-        DCHECK_LT(state->remaining_payload(), frame_header.payload_length);
-        DCHECK_LE(state->remaining_payload(),
-                  frame_header.payload_length -
-                      Http2PushPromiseFields::EncodedSize());
-        DCHECK_LE(
-            state->remaining_payload(),
-            frame_header.payload_length -
-                Http2PushPromiseFields::EncodedSize() -
-                (frame_header.IsPadded() ? (1 + state->remaining_padding())
-                                         : 0));
-        {
-          size_t avail = state->AvailablePayload(db);
-          state->listener()->OnHpackFragment(db->cursor(), avail);
-          db->AdvanceCursor(avail);
-          state->ConsumePayload(avail);
-        }
-        if (state->remaining_payload() > 0) {
-          payload_state_ = PayloadState::kReadPayload;
-          return DecodeStatus::kDecodeInProgress;
-        }
-      // FALLTHROUGH_INTENDED
-
-      case PayloadState::kSkipPadding:
-        // SkipPadding handles the OnPadding callback.
-        if (state->SkipPadding(db)) {
-          state->listener()->OnPushPromiseEnd();
-          return DecodeStatus::kDecodeDone;
-        }
-        payload_state_ = PayloadState::kSkipPadding;
-        return DecodeStatus::kDecodeInProgress;
-
-      case PayloadState::kResumeDecodingPushPromiseFields:
-        status =
-            state->ResumeDecodingStructureInPayload(&push_promise_fields_, db);
-        if (status == DecodeStatus::kDecodeDone) {
-          // Finished decoding the Promised Stream ID. Can now tell the listener
-          // that we're starting to decode a PUSH_PROMISE frame.
-          ReportPushPromise(state);
-          payload_state_ = PayloadState::kReadPayload;
-          continue;
-        }
-        payload_state_ = PayloadState::kResumeDecodingPushPromiseFields;
-        return status;
-    }
-    HTTP2_BUG << "PayloadState: " << payload_state_;
-  }
-}
-
-void PushPromisePayloadDecoder::ReportPushPromise(FrameDecoderState* state) {
-  const Http2FrameHeader& frame_header = state->frame_header();
-  if (frame_header.IsPadded()) {
-    state->listener()->OnPushPromiseStart(frame_header, push_promise_fields_,
-                                          1 + state->remaining_padding());
-  } else {
-    state->listener()->OnPushPromiseStart(frame_header, push_promise_fields_,
-                                          0);
-  }
-}
-
-}  // namespace net