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;