SDK / exoplayer

This is necessary to make sure that the correct thing happens
where MediaCodecInfo.adaptive is queried directly (for example,
MediaCodecVideoRenderer uses the field to determine how to size
input buffers). Also disable adaptive on Nexus 10.

Issue: #2806

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=157583473