Currently a class attribute change invalidates style for the entire element subtree for any class found in the active stylesheet set. We should determine exactly which descendants are affected and invalidate just those.
rdar://problem/12526450
Created attachment 271002 [details] patch
Comment on attachment 271002 [details] patch Attachment 271002 [details] did not pass mac-ews (mac): Output: http://webkit-queues.webkit.org/results/810220 New failing tests: svg/animations/classAttributeSettingCrash.html fast/forms/number/number-size.html
Created attachment 271006 [details] Archive of layout-test-results from ews103 for mac-yosemite The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews103 Port: mac-yosemite Platform: Mac OS X 10.10.5
Created attachment 271007 [details] patch
Created attachment 271012 [details] patch
Created attachment 271014 [details] patch
Comment on attachment 271014 [details] patch View in context: https://bugs.webkit.org/attachment.cgi?id=271014&action=review r=me, very cool :) > Source/WebCore/ChangeLog:45 > + Make this is a member. Make this is a typo.
https://trac.webkit.org/r196383