Added Frame.GetUpdatedTrackData() to playback data recorded to specified additional tracks in recordings.Added Frame.RecordTrackData() to record data to specified additional tracks when producing a recording.Added ARCoreRecordingConfig.Tracks list to allow the specification of additional tracks to record to when producing a recording.Added new Custom Data Track Recording/Playback API, augmentations of the recording and playback features that allow developers to record and playback data to and from custom specified tracks, packaged as MP4 recordings.Developer guide, (), (), ARCoreSessionConfig.DepthMode.All devices that support the existing Depth API in ARCore supported devices now also support the new Raw Depth API.Added new Raw Depth API that provides a depth image without image-space filtering.Performing Frame.Raycast() or Frame.RaycastAll() when the parameter filter is set to TrackableHitFlags.Default and ARCoreSessionConfig.DepthMode is DepthMode.Automatic will now include DepthPoint types in the TrackableHit.

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