Revert of Move bitstream parser to more appropriate directory.

webrtc/common_video/h264/h264_bitstream_parser.h

-/*
- *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_COMMON_VIDEO_H264_H264_BITSTREAM_PARSER_H_
-#define WEBRTC_COMMON_VIDEO_H264_H264_BITSTREAM_PARSER_H_
-#include <stddef.h>
-#include <stdint.h>
-
-#include "webrtc/base/optional.h"
-#include "webrtc/common_video/h264/pps_parser.h"
-#include "webrtc/common_video/h264/sps_parser.h"
-
-namespace rtc {
-class BitBufferWriter;
-}
-
-namespace webrtc {
-
-// Stateful H264 bitstream parser (due to SPS/PPS). Used to parse out QP values
-// from the bitstream.
-// TODO(pbos): Unify with RTP SPS parsing and only use one H264 parser.
-// TODO(pbos): If/when this gets used on the receiver side CHECKs must be
-// removed and gracefully abort as we have no control over receive-side
-// bitstreams.
-class H264BitstreamParser {
- public:
-  H264BitstreamParser();
-  virtual ~H264BitstreamParser();
-
-  // Parse an additional chunk of H264 bitstream.
-  void ParseBitstream(const uint8_t* bitstream, size_t length);
-
-  // Get the last extracted QP value from the parsed bitstream.
-  bool GetLastSliceQp(int* qp) const;
-
- protected:
-  void ParseSlice(const uint8_t* slice, size_t length);
-  bool ParseNonParameterSetNalu(const uint8_t* source,
-                                size_t source_length,
-                                uint8_t nalu_type);
-
-  // SPS/PPS state, updated when parsing new SPS/PPS, used to parse slices.
-  rtc::Optional<SpsParser::SpsState> sps_;
-  rtc::Optional<PpsParser::PpsState> pps_;
-
-  // Last parsed slice QP.
-  rtc::Optional<int32_t> last_slice_qp_delta_;
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_COMMON_VIDEO_H264_H264_BITSTREAM_PARSER_H_