Implement updateViaCache flag and no-cache by default for main service worker scripts

content/child/service_worker/service_worker_dispatcher.cc

Index: content/child/service_worker/service_worker_dispatcher.cc
diff --git a/content/child/service_worker/service_worker_dispatcher.cc b/content/child/service_worker/service_worker_dispatcher.cc
index be61ffb7a3a0abe7b44e50dfc59d05269111372e..a44862057788a9de7e2ad75bbb228bfae93b1b26 100644
--- a/content/child/service_worker/service_worker_dispatcher.cc
+++ b/content/child/service_worker/service_worker_dispatcher.cc
@@ -123,6 +123,7 @@ void ServiceWorkerDispatcher::RegisterServiceWorker(
     int provider_id,
     const GURL& pattern,
     const GURL& script_url,
+    blink::WebServiceWorkerUpdateViaCache update_via_cache,
     std::unique_ptr<WebServiceWorkerRegistrationCallbacks> callbacks) {
   DCHECK(callbacks);
 
@@ -137,13 +138,15 @@ void ServiceWorkerDispatcher::RegisterServiceWorker(
   }
 
   int request_id = pending_registration_callbacks_.Add(std::move(callbacks));
+  ServiceWorkerRegistrationOptions options(pattern, update_via_cache);
+
   TRACE_EVENT_ASYNC_BEGIN2("ServiceWorker",
                            "ServiceWorkerDispatcher::RegisterServiceWorker",
                            request_id,
                            "Scope", pattern.spec(),
                            "Script URL", script_url.spec());
   thread_safe_sender_->Send(new ServiceWorkerHostMsg_RegisterServiceWorker(
-      CurrentWorkerId(), request_id, provider_id, pattern, script_url));
+      CurrentWorkerId(), request_id, provider_id, script_url, options));
 }
 
 void ServiceWorkerDispatcher::UpdateServiceWorker(
@@ -186,6 +189,7 @@ void ServiceWorkerDispatcher::GetRegistration(
 
   int request_id =
       pending_get_registration_callbacks_.Add(std::move(callbacks));
+
   TRACE_EVENT_ASYNC_BEGIN1("ServiceWorker",
                            "ServiceWorkerDispatcher::GetRegistration",
                            request_id,