Don't waste time computing selection painting info when we don't even have a selection.
Created attachment 252974 [details] Patch
Comment on attachment 252974 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=252974&action=review > Source/WebCore/ChangeLog:5 > + And rdar://problem/20919920 > Source/WebCore/ChangeLog:12 > + at all. computing the selection style takes time in the case where a ::selection pseudo is computing -> Computing
Fixed in r184293.