This is a 1% win on SunSpider.
Created attachment 103167 [details] The patch
Attachment 103167 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/JavaScriptCore/runtime/PropertyMapHashTable.h:158: The parameter name "key" adds no information, so it should be removed. [readability/parameter_name] [5] Total errors found: 1 in 8 files If any of these errors are false positives, please file a bug against check-webkit-style.
Comment on attachment 103167 [details] The patch r=me, but fix the style problem
Fixed in r92569