MediaSource should be the single source of truth for the duration of the MediaSource, and querying it to MediaSource is efficient enough (trivial getter). There is no reason for MediaSourceClientGStreamerMSE to store a separate m_duration field. This patch introduces no behavior changes.
Created attachment 403855 [details] Patch
Committed r264166: <https://trac.webkit.org/changeset/264166> All reviewed patches have been landed. Closing bug and clearing flags on attachment 403855 [details].