Revert "Adding or changing any of box-shadow, outline, or border-image-outset does not need a layou…

Source/core/rendering/style/BorderData.h

Index: Source/core/rendering/style/BorderData.h
diff --git a/Source/core/rendering/style/BorderData.h b/Source/core/rendering/style/BorderData.h
index 8faa0fe10d623fa9d1d4c4c85d714ba3380f349a..ad575b59236aba8307beee1fafb69b5e0d423e7c 100644
--- a/Source/core/rendering/style/BorderData.h
+++ b/Source/core/rendering/style/BorderData.h
@@ -107,11 +107,6 @@ public:
             && m_bottomRight == o.m_bottomRight;
     }
 
-    bool visualOverflowEqual(const BorderData& o) const
-    {
-        return m_image.outset() == o.m_image.outset();
-    }
-
     bool operator!=(const BorderData& o) const
     {
         return !(*this == o);