Currently Chromium Linux Hardy and Mac Leopard are still using the "old-inline" worker model. They should switch to the new model so I can delete the old code.
Created attachment 86717 [details] Patch
Actually, they used the old-threads model, and mac defaulted to 1 child processes. This change cleans up the defaults across the board. I've removed the warning message in the chromium-mac code since it's not likely to change at this point and leopard isn't getting a lot of usage apart from the bots.
Committed r81908: <http://trac.webkit.org/changeset/81908>
http://trac.webkit.org/changeset/81908 might have broken Leopard Intel Debug (Tests)
Indeed it did (python-tests). Fixing shortly.
fixed in bug 57063.