GC-owned malloc memory ("extra memory" in JSC::Heap terms) is a significant chunk of the bmalloc bucket in ResourceUsageOverlay.
Let's make it a separate category to demystify "bmalloc" a bit.
Created attachment 264708 [details]
Comment on attachment 264708 [details]
Clearing flags on attachment: 264708
Committed r191985: <http://trac.webkit.org/changeset/191985>
All reviewed patches have been landed. Closing bug.