Add support for fallback content for the frame. This includes main and subframes.

content/browser/service_worker/service_worker_controllee_request_handler.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_controllee_request_handler.h"
 
 #include <memory>
 #include <set>
 #include <string>
 
@@ skipping 184 matching lines @@
 void ServiceWorkerControlleeRequestHandler::MaybeCreateLoader(
     const ResourceRequest& resource_request,
     ResourceContext* resource_context,
     LoaderCallback callback) {
   DCHECK(ServiceWorkerUtils::IsServicificationEnabled());
   DCHECK(is_main_resource_load_);
   ClearJob();
 
   if (!context_ || !provider_host_) {
     // We can't do anything other than to fall back to network.
-    std::move(callback).Run(StartLoaderCallback());
+    std::move(callback).Run(StartLoaderCallback(), ResponseFallback());
     return;
   }
 
   // In fallback cases we basically 'forward' the request, so we should
   // never see use_network_ gets true.
   DCHECK(!use_network_);
 
 #if BUILDFLAG(ENABLE_OFFLINE_PAGES)
   // Fall back for the subsequent offline page interceptor to load the offline
   // snapshot of the page if required.
@@ skipping 325 matching lines @@
 
 void ServiceWorkerControlleeRequestHandler::ClearJob() {
   url_job_.reset();
 }
 
 bool ServiceWorkerControlleeRequestHandler::JobWasCanceled() const {
   return !url_job_ || url_job_->WasCanceled();
 }
 
 }  // namespace content