Refactor MSE implementation on Android to simplify the logic and improve the performance

media/base/android/demuxer_stream_player_params.h

Index: media/base/android/demuxer_stream_player_params.h
diff --git a/media/base/android/demuxer_stream_player_params.h b/media/base/android/demuxer_stream_player_params.h
index e77d5d294a506302f15230845e9fdcc3fbcc6b13..0b8886eb3b1403eee70bc83928d398d3932b680f 100644
--- a/media/base/android/demuxer_stream_player_params.h
+++ b/media/base/android/demuxer_stream_player_params.h
@@ -54,6 +54,12 @@ struct MEDIA_EXPORT DemuxerData {
 
   DemuxerStream::Type type;
   std::vector<AccessUnit> access_units;
+  // If the last entry in |access_units| has a status equal to |kConfigChanged|,
+  // a corresponding DemuxerConfigs is added into this vector. The
+  // DemuxerConfigs should only contain information of the stream that is
+  // specified by |type|. This solves the issue that we need multiple IPCs when
+  // demuxer configs change.
+  std::vector<DemuxerConfigs> demuxer_configs;
 };
 
 };  // namespace media