Revert of Move bitstream parser to more appropriate directory.

webrtc/modules/video_coding/utility/h264_bitstream_parser.h

Index: webrtc/modules/video_coding/utility/h264_bitstream_parser.h
diff --git a/webrtc/modules/video_coding/utility/h264_bitstream_parser.h b/webrtc/modules/video_coding/utility/h264_bitstream_parser.h
new file mode 100644
index 0000000000000000000000000000000000000000..6a779e156bac14fde289207d220b91c81e660ff0
--- /dev/null
+++ b/webrtc/modules/video_coding/utility/h264_bitstream_parser.h
@@ -0,0 +1,59 @@
+/*
+ *  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_MODULES_VIDEO_CODING_UTILITY_H264_BITSTREAM_PARSER_H_
+#define WEBRTC_MODULES_VIDEO_CODING_UTILITY_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_MODULES_VIDEO_CODING_UTILITY_H264_BITSTREAM_PARSER_H_