For better accounting, let's also force flush the BlockAllocator's freed blocks back to the system upon simulated memory pressure.
Created attachment 233440 [details] Patch
Comment on attachment 233440 [details] Patch r=me
Comment on attachment 233440 [details] Patch Clearing flags on attachment: 233440 Committed r170201: <http://trac.webkit.org/changeset/170201>
All reviewed patches have been landed. Closing bug.