These are not being used, and just contribute to view lifecycle noise (show, hide, shown, hidden, closed).
Created attachment 321594 [details] Patch
SidebarPanel.prototype.show/hide just set the selected panel and collapsed/uncollapsed the sidebar. `hide` was unused, and `show` was only used in two special cases. These methods provided no functionality beyond what can easily be accomplished via the Sidebar, and were confusing due to their similarity to shown/hidden.
Created attachment 321599 [details] Patch
Comment on attachment 321599 [details] Patch r=me
Comment on attachment 321599 [details] Patch Clearing flags on attachment: 321599 Committed r222420: <http://trac.webkit.org/changeset/222420>
All reviewed patches have been landed. Closing bug.
<rdar://problem/34693102>