- Support querying whether the current window is dynamic
and seekable. The new methods are similar to getDuration,
which is also a convenience method for the current window.
- Improve demo app to restore positions in VOD items within
playlists where the last item is live. Also restore the
position within the window for live items unless the player
failed with BehindLiveWindowException.
Issue: #2320
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=144443898