Adding a protected method for that allows to supply a customized
TrackOutputProvider to the ExtractorWrapper used by the ContainerMediaChunk
(e.g. for logging purposes).
The alternative would be to provide a TrackOutputProvider through the
ChunkSampleStream constructor, but the extra initialization taking place
in the ChunkSampleStream constructor would need to move somewhere else and
some methods of BaseMediaChunkOutput would need to move to the
TrackOutputProvider interface. This seems too much effort for niche
customization case.
PiperOrigin-RevId: 242448776
2d7b9d876f