Traverse into child LayoutViews during invalidateTreeIfNeeded

Source/core/layout/LayoutObject.h

Index: Source/core/layout/LayoutObject.h
diff --git a/Source/core/layout/LayoutObject.h b/Source/core/layout/LayoutObject.h
index 70f086801a6ac4c63efa7a6cdda5ac7768b84b69..133696aa0bb6ef893e0c7a1d03fc34f09a44b194 100644
--- a/Source/core/layout/LayoutObject.h
+++ b/Source/core/layout/LayoutObject.h
@@ -621,6 +621,7 @@ public:
     // If paintInvalidationContainer and paintInvalidationContainerSkipped are not null, on return *paintInvalidationContainerSkipped
     // is true if the layoutObject returned is an ancestor of paintInvalidationContainer.
     LayoutObject* container(const LayoutBoxModelObject* paintInvalidationContainer = nullptr, bool* paintInvalidationContainerSkipped = nullptr) const;
+    LayoutObject* containerCrossingFrameBoundaries() const;
     LayoutBlock* containerForFixedPosition(const LayoutBoxModelObject* paintInvalidationContainer = nullptr, bool* paintInvalidationContainerSkipped = nullptr) const;
 
     virtual LayoutObject* hoverAncestor() const { return parent(); }