Get rid of unnecessary layouts on body elements with quirky children

Source/core/rendering/RenderBlockFlow.cpp

Index: Source/core/rendering/RenderBlockFlow.cpp
diff --git a/Source/core/rendering/RenderBlockFlow.cpp b/Source/core/rendering/RenderBlockFlow.cpp
index 9cbadc97f3faa2e182e4a9896c5bd58a479db925..d570412d5bbf0aa7fc8821c39ad5c59273a97362 100644
--- a/Source/core/rendering/RenderBlockFlow.cpp
+++ b/Source/core/rendering/RenderBlockFlow.cpp
@@ -1350,7 +1350,7 @@ void RenderBlockFlow::marginBeforeEstimateForChild(RenderBox* child, LayoutUnit&
     // Give up if in quirks mode and we're a body/table cell and the top margin of the child box is quirky.
     // Give up if the child specified -webkit-margin-collapse: separate that prevents collapsing.
     // FIXME: Use writing mode independent accessor for marginBeforeCollapse.
-    if ((document().inQuirksMode() && hasMarginAfterQuirk(child) && (isTableCell() || isBody())) || child->style()->marginBeforeCollapse() == MSEPARATE)
+    if ((document().inQuirksMode() && hasMarginBeforeQuirk(child) && (isTableCell() || isBody())) || child->style()->marginBeforeCollapse() == MSEPARATE)
         return;
 
     // The margins are discarded by a child that specified -webkit-margin-collapse: discard.