Reduce invalidation on children-needs-layout containers

Source/core/rendering/style/RenderStyle.h

Index: Source/core/rendering/style/RenderStyle.h
diff --git a/Source/core/rendering/style/RenderStyle.h b/Source/core/rendering/style/RenderStyle.h
index 0ef9eb2bb2e6f2d2d2856050944cf35148708294..cf98987bfd2770cbb5c49216e3c49a8e70d378d4 100644
--- a/Source/core/rendering/style/RenderStyle.h
+++ b/Source/core/rendering/style/RenderStyle.h
@@ -805,6 +805,9 @@ public:
     StyleReflection* boxReflect() const { return rareNonInheritedData->m_boxReflect.get(); }
     bool reflectionDataEquivalent(const RenderStyle* otherStyle) const { return rareNonInheritedData->reflectionDataEquivalent(*otherStyle->rareNonInheritedData); }
 
+    // FIXME: The outline should be part of this.
+    bool hasVisualOverflowingEffect() const { return boxShadow() || hasBorderImageOutsets(); }
+
     EBoxSizing boxSizing() const { return m_box->boxSizing(); }
     const Length& marqueeIncrement() const { return rareNonInheritedData->m_marquee->increment; }
     int marqueeSpeed() const { return rareNonInheritedData->m_marquee->speed; }