Introduce DecodeTimestamp class to make it easier to distiguish presentation and decode timestamps.

media/formats/mp2t/es_adapter_video.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_ADAPTER_VIDEO_H_
 #define MEDIA_FORMATS_MP2T_ES_ADAPTER_VIDEO_H_
 
 #include <deque>
 #include <list>
 #include <utility>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "media/base/media_export.h"
+#include "media/base/stream_parser_buffer.h"
 
 namespace media {
-class StreamParserBuffer;
+
 class VideoDecoderConfig;
 
 namespace mp2t {
 
 // Some constraints of the MSE spec are not necessarily met by video streams
 // inside an Mpeg2 TS stream.
 // The goal of the ES adapter is to modify the incoming buffers to meet these
 // constraints, e.g.
 // - get the frame duration,
 // - replace the leading non-key frames by the first key frame to avoid
@@ skipping 51 matching lines @@
   // Global index of the first buffer in |buffer_list_|.
   int64 buffer_index_;
 
   // List of buffer to be emitted and PTS of frames already emitted.
   BufferQueue buffer_list_;
   std::list<base::TimeDelta> emitted_pts_;
 
   // - Minimum PTS of discarded frames.
   // - DTS of discarded frames.
   base::TimeDelta discarded_frames_min_pts_;
-  std::list<base::TimeDelta> discarded_frames_dts_;
+  std::list<DecodeTimestamp> discarded_frames_dts_;
 
   DISALLOW_COPY_AND_ASSIGN(EsAdapterVideo);
 };
 
 }  // namespace mp2t
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MP2T_ES_ADAPTER_VIDEO_H_