[ServiceWorker] Propagates ServiceWorker fetched response's URL and wasFetchedViaServiceWorker flag.

content/browser/service_worker/service_worker_context_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_context_request_handler.h"
 
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_provider_host.h"
 #include "content/browser/service_worker/service_worker_read_from_cache_job.h"
 #include "content/browser/service_worker/service_worker_storage.h"
@@ skipping 54 matching lines @@
   int64 response_id = kInvalidServiceWorkerResponseId;
   if (ShouldReadFromScriptCache(request->url(), &response_id)) {
     return new ServiceWorkerReadFromCacheJob(
         request, network_delegate, context_, response_id);
   }
 
   // NULL means use the network.
   return NULL;
 }
 
+void ServiceWorkerContextRequestHandler::GetExtraResponseInfo(
+    bool* was_fetched_via_service_worker,
+    GURL* original_url_via_service_worker) const {
+  *was_fetched_via_service_worker = false;
+  *original_url_via_service_worker = GURL();
+}
+
 bool ServiceWorkerContextRequestHandler::ShouldAddToScriptCache(
     const GURL& url) {
   // We only write imports that occur during the initial eval.
   if (version_->status() != ServiceWorkerVersion::NEW &&
       version_->status() != ServiceWorkerVersion::INSTALLING) {
     return false;
   }
   return version_->script_cache_map()->Lookup(url) ==
             kInvalidServiceWorkerResponseId;
 }
 
 bool ServiceWorkerContextRequestHandler::ShouldReadFromScriptCache(
     const GURL& url, int64* response_id_out) {
   // We don't read from the script cache until the version is INSTALLED.
   if (version_->status() == ServiceWorkerVersion::NEW ||
       version_->status() == ServiceWorkerVersion::INSTALLING)
     return false;
   *response_id_out = version_->script_cache_map()->Lookup(url);
   return *response_id_out != kInvalidServiceWorkerResponseId;
 }
 
 }  // namespace content