Maintain child dependent ComputedStyle flags if propagation stops.

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index ddee2df92be60fbc5fc8bbdf42b2c34de427e6f0..61ceb92aba054197167f2a807c902e5e528aaeb6 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -1743,8 +1743,15 @@ StyleRecalcChange Element::recalcOwnStyle(StyleRecalcChange change)
     if (change > Inherit || localChange > Inherit)
         return max(localChange, change);
 
-    if (localChange < Inherit && (oldStyle->hasPseudoElementStyle() || newStyle->hasPseudoElementStyle()))
-        return UpdatePseudoElements;
+    if (localChange < Inherit) {
+        if (oldStyle->hasChildDependentFlags()) {
+            if (childNeedsStyleRecalc())
+                return Inherit;
+            newStyle->copyChildDependentFlagsFrom(*oldStyle);
+        }
+        if (oldStyle->hasPseudoElementStyle() || newStyle->hasPseudoElementStyle())
+            return UpdatePseudoElements;
+    }
 
     return localChange;
 }