The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/06a15b52d5f3f5cf05559afc0f03a60e4f289e21

commit 06a15b52d5f3f5cf05559afc0f03a60e4f289e21
Author: servolk <servolk@chromium.org>
Date: Fri Aug 12 01:03:21 2016

Assign correct track ids to buffers emitted from StreamParsers

Currently only the WebM stream parser assigns correct track bytestream
ids for each emitted buffer. We need to ensure that other stream parsers
(MP4, mpeg2ts, etc) do the same.

BUG= 636999 

Review-Url: https://codereview.chromium.org/2239013002
Cr-Commit-Position: refs/heads/master@{#411498}

[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/common/stream_parser_test_base.cc
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/common/stream_parser_test_base.h
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mp2t/es_parser_adts.cc
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mp2t/es_parser_h264.cc
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mp2t/es_parser_mpeg1audio.cc
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mp2t/mp2t_common.h
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mp2t/mp2t_stream_parser_unittest.cc
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mp4/mp4_stream_parser.cc
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mp4/mp4_stream_parser_unittest.cc
[modify] https://crrev.com/06a15b52d5f3f5cf05559afc0f03a60e4f289e21/media/formats/mpeg/mpeg_audio_stream_parser_base.cc