Additionally, two existing methods to `buildDataSpec` in `DashUtil` have been deprecated, while a new method has been added that allows the inclusion of `httpRequestHeaders`.
Issue: google/ExoPlayer#8699
#minor-release
PiperOrigin-RevId: 540594444
(cherry picked from commit c69b6fe41d065175dacc22b1b30efed91b8102f1)
