olly bf5495f2f5 Optimize in-buffer seeking for HLS
Also move to using an array to hold the SampleQueues,
as we've moved to doing in ExtractorMediaPeriod.

Issue: #551

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=161972990
2017-07-15 17:33:33 +01:00
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2017-07-15 17:33:33 +01:00