DoNotForceUpdate  460 Source/core/rendering/compositing/RenderLayerCompositor.cpp     GraphicsLayerUpdater::UpdateType graphicsLayerUpdateType = GraphicsLayerUpdater::DoNotForceUpdate;
DoNotForceUpdate  461 Source/core/rendering/compositing/RenderLayerCompositor.cpp     CompositingPropertyUpdater::UpdateType compositingPropertyUpdateType = CompositingPropertyUpdater::DoNotForceUpdate;