SP: Invalidate paint for the entire layout tree when ending printing.

Source/core/layout/LayoutView.h

Index: Source/core/layout/LayoutView.h
diff --git a/Source/core/layout/LayoutView.h b/Source/core/layout/LayoutView.h
index fc6656e6e09877266402fb9992f7b8bdbde60808..cbd3d3cbd7d2e4777dff1df459150487a2d29b9c 100644
--- a/Source/core/layout/LayoutView.h
+++ b/Source/core/layout/LayoutView.h
@@ -183,6 +183,10 @@ public:
 
     virtual LayoutRect visualOverflowRect() const override;
 
+    // Invalidates paint for the entire view, including composited descendants, but not including child frames.
+    // It is very likely you do not want to call this method.
+    void setShouldDoFullPaintInvalidationForViewAndAllDescendants();
+
 private:
     virtual void mapLocalToContainer(const LayoutBoxModelObject* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = nullptr, const PaintInvalidationState* = nullptr) const override;