clearContentsLayerIfUnregistered  346 Source/platform/graphics/GraphicsLayer.cpp     clearContentsLayerIfUnregistered();
clearContentsLayerIfUnregistered  490 Source/platform/graphics/GraphicsLayer.cpp     clearContentsLayerIfUnregistered();
clearContentsLayerIfUnregistered  334 Source/platform/graphics/GraphicsLayer.h     void clearContentsLayerIfUnregistered();