- Make sure no events are posted on PlaybackControlView
if it's not attached to a window. This can cause leaks.
The target hide time is recorded if necessary and
processed when the view is re-attached.
- Deduplicated PlaybackControlView.VisibilityListener
invocations.
- Fixed timeouts to be more intuitive (I think).
- Fixed initial visibility of PlaybackControlView when
used as part of SimpleExoPlayerView.
- Made some more attributes configurable from layout xml.
Issue: #1908
Issue: #1919
Issue: #1923
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=135679988
