856c2f8d3e
We (eventually - albeit possibly infinitely far in the future) expect a timeline update with a window of known duration. This also stops live radio stream playbacks transitioning to ended state when their tracks are disabled. As part of this fix, I found an issue where getPeriodPosition could return null even when defaultPositionProjectionUs is 0, which is not as documented. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=176492024