Don't speculatively start ServiceWorker if it doesn't have FetchEvent handler

content/browser/service_worker/service_worker_context_wrapper.cc

Index: content/browser/service_worker/service_worker_context_wrapper.cc
diff --git a/content/browser/service_worker/service_worker_context_wrapper.cc b/content/browser/service_worker/service_worker_context_wrapper.cc
index 64ae3ea762f36fabfff18ff825a3dd97d0accf63..eeac4d3bfa1a06a2f5aa0af8950ffaa784dac6ae 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.cc
+++ b/content/browser/service_worker/service_worker_context_wrapper.cc
@@ -341,6 +341,13 @@ void ServiceWorkerContextWrapper::DidFindRegistrationForNavigationHint(
     return;
   }
 
+  if (registration->active_version()->fetch_handler_existence() ==
+      ServiceWorkerVersion::FetchHandlerExistence::DOES_NOT_EXIST) {
+    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+                            base::Bind(callback, false));
+    return;
+  }
+
   // Add the process reference of |render_process_id| not to launch a new
   // renderer process for the service worker.
   context_core_->process_manager()->AddProcessReferenceToPattern(