hoangtc 5019da3e7b Update ABR logic in AdaptiveTrackSelection for live streaming case
In live streaming, if the playback position is very close to live edge,
the buffered duration will never reach minDurationForQualityIncreaseMs,
which prevents switching from ever happening. So we will provide the
durationToLiveEdgeUs to AdaptiveTrackSelection in live streaming case,
so it can handle this edge case.

GitHub: #3017

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=168535969
2017-09-15 23:33:10 +01:00
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