Deletion of Timeline of Valve Corporation

Comment: per  and tand-alone lists, timelines are a type or list articles. The history section at Valve Corporation#History is not written in chronological order, so this list provides a better explanation of the timeline of the company, and per PLIT it's OK to have dependent articles providing additional detail of the information at the base article
Stance: keep
Cited policy: Wikipedia:Notability (WP:LISTN||WP:S||WP:SPLIT)