ServiceWorker: Store the existence of fetch event handler

content/browser/service_worker/service_worker_version.cc

Index: content/browser/service_worker/service_worker_version.cc
diff --git a/content/browser/service_worker/service_worker_version.cc b/content/browser/service_worker/service_worker_version.cc
index f3f506d67da4c50c537b3074f89266e1ce9b27a1..b3b0176bc20625f604efd62186d12aafa86903c4 100644
--- a/content/browser/service_worker/service_worker_version.cc
+++ b/content/browser/service_worker/service_worker_version.cc
@@ -556,6 +556,12 @@ void ServiceWorkerVersion::RunAfterStartWorker(
                          error_callback, task));
 }
 
+void ServiceWorkerVersion::DispatchInstallEvent(int request_id) {
+  DispatchEvent<ServiceWorkerHostMsg_InstallEventFinished>(
+      request_id, ServiceWorkerMsg_InstallEvent(request_id),
+      base::Bind(&ServiceWorkerVersion::OnInstallEventResponse, this));
+}
+
 void ServiceWorkerVersion::AddControllee(
     ServiceWorkerProviderHost* provider_host) {
   const std::string& uuid = provider_host->client_uuid();
@@ -941,6 +947,14 @@ void ServiceWorkerVersion::OnSimpleEventResponse(
   callback.Run(status);
 }
 
+void ServiceWorkerVersion::OnInstallEventResponse(
+    int request_id,
+    blink::WebServiceWorkerEventResult result,
+    bool has_fetch_handler) {
+  has_fetch_handler_ = has_fetch_handler;
+  OnSimpleEventResponse(request_id, result);
+}
+
 void ServiceWorkerVersion::OnOpenWindow(int request_id, GURL url) {
   // Just abort if we are shutting down.
   if (!context_)