RasterRequiredForActivationSyntheticDelayInitializer 23 cc/resources/raster_worker_pool.cc RasterRequiredForActivationSyntheticDelayInitializer() RasterRequiredForActivationSyntheticDelayInitializer 28 cc/resources/raster_worker_pool.cc static base::LazyInstance<RasterRequiredForActivationSyntheticDelayInitializer>