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jonlee@apple.com authored
https://bugs.webkit.org/show_bug.cgi?id=60429 <rdar://problem/9389619> Reviewed by Alice Liu. * page/EventHandler.cpp: (WebCore::EventHandler::handleWheelEvent):add check to see if the shadow ancestor node of the node that was under the mouse exists before trying to dispatch the wheel event to it. git-svn-id: http://svn.webkit.org/repository/webkit/trunk@86002 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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