Terry Heo 5a3ef42422 TIF: Use copied track list for onTracksChanged() callback
In notifyTracksChanged(), the calling onTracksChanged() could be delayed.
To prevent race condition on tracks, we should use the copy of tracks.

Bug: 22436933
Change-Id: I0c595df9d06d5f7bda4a9f8c21a661f7aa7db71f
2015-07-20 01:29:44 +00:00
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