fix(HLS): Fix discontinuity timestamp offset
fix(HLS): Fix discontinuity timestamp offset

Closes #2687

Change-Id: I60e41341d1149eb8200bec71fa1bafb5be8e57c7

tvoli/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,tvoli/shaka-player