ServiceWorker: Keep the worker alive until FetchEvent.waitUntil settles

content/browser/service_worker/service_worker_browsertest.cc

Index: content/browser/service_worker/service_worker_browsertest.cc
diff --git a/content/browser/service_worker/service_worker_browsertest.cc b/content/browser/service_worker/service_worker_browsertest.cc
index 60c6b2bad01ea5e7e20668f906df300a31826a29..8edcb97a25cb1bdb0510e20f92a284a4cc275dfc 100644
--- a/content/browser/service_worker/service_worker_browsertest.cc
+++ b/content/browser/service_worker/service_worker_browsertest.cc
@@ -651,9 +651,13 @@ class ServiceWorkerVersionBrowserTest : public ServiceWorkerBrowserTest {
     int request_id =
         version_->StartRequest(ServiceWorkerMetrics::EventType::INSTALL,
                                CreateReceiver(BrowserThread::UI, done, result));
-    version_->DispatchEvent<ServiceWorkerHostMsg_InstallEventFinished>(
-        request_id, ServiceWorkerMsg_InstallEvent(request_id),
-        base::Bind(&self::ReceiveInstallEventOnIOThread, this, done, result));
+    version_->
+        RegisterRequestCallback<ServiceWorkerHostMsg_InstallEventFinished>(
+            request_id,
+            base::Bind(&self::ReceiveInstallEventOnIOThread,
+                       this, done, result));
+    version_->DispatchEvent(ServiceWorkerMsg_InstallEvent(request_id),
+                            request_id);
   }
 
   void ReceiveInstallEventOnIOThread(const base::Closure& done,