ServiceWorker

16a480fc - reflect WG change [depends on another PR] (#1202)

reflect WG change [depends on another PR] (#1202) * reflect WG change, depends on https://github.com/tabatkins/bikeshed/pull/1109 * reflect WG change (see 2afc4ca9397e7227a81061aa5e41095bc273eb09) * regen HTML