media: Cleanup class/struct forward declarations

media/formats/mp2t/es_parser_h264.h

 // Copyright 2014 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 MEDIA_FORMATS_MP2T_ES_PARSER_H264_H_
 #define MEDIA_FORMATS_MP2T_ES_PARSER_H264_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "media/base/media_export.h"
 #include "media/base/video_decoder_config.h"
 #include "media/formats/mp2t/es_adapter_video.h"
 #include "media/formats/mp2t/es_parser.h"
 
 namespace media {
 class EncryptionScheme;
 class H264Parser;
 struct H264SPS;
-class OffsetByteQueue;
 }
 
 namespace media {
 namespace mp2t {
 
 // A few remarks:
 // - In this h264 parser, frame splitting is based on AUD nals.
 // Mpeg2 TS spec: "2.14 Carriage of Rec. ITU-T H.264 | ISO/IEC 14496-10 video"
 // "Each AVC access unit shall contain an access unit delimiter NAL Unit;"
 // - PES packets do not necessarily map to an H264 access unit although the HLS
@@ skipping 48 matching lines @@
   // Last video decoder config.
   VideoDecoderConfig last_video_decoder_config_;
 
   DISALLOW_COPY_AND_ASSIGN(EsParserH264);
 };
 
 }  // namespace mp2t
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MP2T_ES_PARSER_H264_H_