a2ffcec200
drmInitData can be null in DASH if all of the init data is specified at the manifest level instead. I took a look at injecting the manifest format into the extractors, so that we can actually copy the scheme type into it, but that's at least non-trivial enough to delay for a subsequent CL. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=161956246