This allows to detect changes in the surface size. SimpleExoPlayer already
has the necessary listeners to report size changes for all surfaces whose
lifecycle are managed by SimpleExoPlayer.
In a subsequent change, AnalyticsCollector can be registered as a
VideoListener to automatically notify of surface size changes.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=199605434
