commit 4fba1f0c2c06184687345d202f0afd08ae8dde2a
author servolk <servolk@chromium.org> Fri Sep 02 02:04:50 2016
committer Commit bot <commit-bot@chromium.org> Fri Sep 02 02:06:46 2016
tree aa2f886f5d3147ddbe8514b4ece2cd1fa6e738bd
parent dd1439f61807327301c7a0aacc3cb30802529280

Implement support for multiple tracks in FFmpegDemuxer

Most of the changes are fairly straightforward. We need to adjust some
logic in FFmpegDemuxer::OnFindStreamInfoDone to allow handling multiple
tracks. Also need to tweak OnEnabledAudioTracksChanged and
OnSelectedVideoTrackChanged a little. And while we are at it let's get
rid of the deprecated ScopedVector and use standard vector instead.

BUG=249427

Review-Url: https://codereview.chromium.org/2284923003
Cr-Commit-Position: refs/heads/master@{#416163}