Don't call into ScrollView from Scrollbar.

Source/core/rendering/RenderLayerScrollableArea.cpp

Index: Source/core/rendering/RenderLayerScrollableArea.cpp
diff --git a/Source/core/rendering/RenderLayerScrollableArea.cpp b/Source/core/rendering/RenderLayerScrollableArea.cpp
index 806fdaf31e92388deb1fa0b23ddf41b13abfe004..4fbe61ec747b59bea9fd478459407f94a6986453 100644
--- a/Source/core/rendering/RenderLayerScrollableArea.cpp
+++ b/Source/core/rendering/RenderLayerScrollableArea.cpp
@@ -880,7 +880,7 @@ void RenderLayerScrollableArea::destroyScrollbar(ScrollbarOrientation orientatio
     if (!scrollbar->isCustomScrollbar())
         willRemoveScrollbar(scrollbar.get(), orientation);
 
-    scrollbar->removeFromParent();
+    toScrollView(scrollbar->parent())->removeChild(scrollbar.get());
     scrollbar->disconnectFromScrollableArea();
     scrollbar = nullptr;
 }