a99ef01d3a
- Avoid re-downloading data prior to the first mdat box when seeking back to the start of an unseekable FMP4. - Avoid re-downloading data prior to the first frame for constant bitrate MP3. - Update SeekMap.getPosition documentation to allow a non-zero position for the unseekable case. Note that XingSeeker was already returning a non-zero position if unseekable. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=177317256