updated 01:15 am EST, Fri March 2, 2012
Will benefit all WebKit-based browsers over time
The work appears to have been done by Filip Pizlo, whom AppleInsider reports just joined Apple's WebKit group in December. The code change has been released to the open-source WebKit group and should benefit any WebKit-dependent browser, such as Safari, Chrome, iCab, Steam's ingame browser, OmniWeb, iOS and WebOS. The changes will not appear in browsers immediately but may show up as early as the next significant release of Safari, expected to be version 5.2.