Auto merge of #12582 - creativcoder:sw-fetch, r=jdm

Make the service worker send custom response

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components/script/dom/dedicatedworkerglobalscope.rs

@@ -307,7 +307,7 @@ impl DedicatedWorkerGlobalScope {
                 let path_seg = format!("url({})", scope.get_url());
                 let reports = get_reports(cx, path_seg);
                 reports_chan.send(reports);
-            },
+            }
         }
     }