Don't proactively slim WebContent processes in the back/forward cache or process cache
Created attachment 427298 [details] Patch
Comment on attachment 427298 [details] Patch Looks fine besides ChangeLog.
Created attachment 427304 [details] patch for landing
Going to do this change in the original bug instead (https://bugs.webkit.org/show_bug.cgi?id=225007). *** This bug has been marked as a duplicate of bug 225007 ***