24 class MockCallback : public Callback {
144     return Callback::OnElementBegin(metadata, action);  in OnElementBeginConcrete()
150     return Callback::OnUnknownElement(metadata, reader, bytes_remaining);  in OnUnknownElementConcrete()
154     return Callback::OnEbml(metadata, ebml);  in OnEbmlConcrete()
159     return Callback::OnVoid(metadata, reader, bytes_remaining);  in OnVoidConcrete()
164     return Callback::OnSegmentBegin(metadata, action);  in OnSegmentBeginConcrete()
168     return Callback::OnSeek(metadata, seek);  in OnSeekConcrete()
172     return Callback::OnInfo(metadata, info);  in OnInfoConcrete()
177     return Callback::OnClusterBegin(metadata, cluster, action);  in OnClusterBeginConcrete()
183     return Callback::OnSimpleBlockBegin(metadata, simple_block, action);  in OnSimpleBlockBeginConcrete()
188     return Callback::OnSimpleBlockEnd(metadata, simple_block);  in OnSimpleBlockEndConcrete()
193     return Callback::OnBlockGroupBegin(metadata, action);  in OnBlockGroupBeginConcrete()
198     return Callback::OnBlockBegin(metadata, block, action);  in OnBlockBeginConcrete()
203     return Callback::OnBlockEnd(metadata, block);  in OnBlockEndConcrete()
208     return Callback::OnBlockGroupEnd(metadata, block_group);  in OnBlockGroupEndConcrete()
213     return Callback::OnFrame(metadata, reader, bytes_remaining);  in OnFrameConcrete()
218     return Callback::OnClusterEnd(metadata, cluster);  in OnClusterEndConcrete()
223     return Callback::OnTrackEntry(metadata, track_entry);  in OnTrackEntryConcrete()
228     return Callback::OnCuePoint(metadata, cue_point);  in OnCuePointConcrete()
233     return Callback::OnEditionEntry(metadata, edition_entry);  in OnEditionEntryConcrete()
237     return Callback::OnTag(metadata, tag);  in OnTagConcrete()
241     return Callback::OnSegmentEnd(metadata);  in OnSegmentEndConcrete()