Aborts all pending fetch event callbacks in ServiceWorkerContextClient::willDestroyWorkerContext.

content/renderer/service_worker/service_worker_context_client.cc

Index: content/renderer/service_worker/service_worker_context_client.cc
diff --git a/content/renderer/service_worker/service_worker_context_client.cc b/content/renderer/service_worker/service_worker_context_client.cc
index 7773587bf3fec6423f7d85a8fe4574c37e2b0dcf..b321f8988fd1f08a3ace0cdb04338809cc4a4a7e 100644
--- a/content/renderer/service_worker/service_worker_context_client.cc
+++ b/content/renderer/service_worker/service_worker_context_client.cc
@@ -472,6 +472,12 @@ void ServiceWorkerContextClient::willDestroyWorkerContext(
     it.GetCurrentValue()->Run(blink::mojom::ServiceWorkerEventStatus::ABORTED,
                               base::Time::Now());
   }
+  // Aborts the all pending fetch event callbacks.
+  for (WorkerContextData::FetchEventCallbacksMap::iterator it(
+           &context_->fetch_event_callbacks);
+       !it.IsAtEnd(); it.Advance()) {
+    it.GetCurrentValue()->Run(SERVICE_WORKER_ERROR_ABORT, base::Time::Now());
+  }
 
   // We have to clear callbacks now, as they need to be freed on the
   // same thread.