Bug 1267733 P3 Trigger service worker update after failed interception. r=jdm

dom/workers/ServiceWorkerEvents.cpp

@@ -112,8 +112,8 @@ NS_IMETHODIMP
 CancelChannelRunnable::Run()
 {
   MOZ_ASSERT(NS_IsMainThread());
-  nsresult rv = mChannel->Cancel(mStatus);
-  NS_ENSURE_SUCCESS(rv, rv);
+  mChannel->Cancel(mStatus);
+  mRegistration->MaybeScheduleUpdate();
   return NS_OK;
 }
 

dom/workers/ServiceWorkerPrivate.cpp

@@ -1377,10 +1377,6 @@ private:
       }
 
       if (!runnable) {
-        nsCOMPtr<nsIRunnable> updateRunnable =
-          new RegistrationUpdateRunnable(mRegistration, false /* time check */);
-        NS_DispatchToMainThread(runnable.forget());
-
         runnable = new CancelChannelRunnable(mInterceptedChannel,
                                              mRegistration,
                                              NS_ERROR_INTERCEPTION_FAILED);