HasNonLayerViewportConstrainedObjects  926 Source/core/page/scrolling/ScrollingCoordinator.cpp         mainThreadScrollingReasons |= HasNonLayerViewportConstrainedObjects;
HasNonLayerViewportConstrainedObjects  939 Source/core/page/scrolling/ScrollingCoordinator.cpp     if (reasons & ScrollingCoordinator::HasNonLayerViewportConstrainedObjects)