Introduce url_list to the Response scheme of CacheStorage.

content/public/common/resource_response_info.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_COMMON_RESOURCE_RESPONSE_INFO_H_
 #define CONTENT_PUBLIC_COMMON_RESOURCE_RESPONSE_INFO_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 98 matching lines @@
 
   // True if the response was fetched by a foreign fetch ServiceWorker;
   bool was_fetched_via_foreign_fetch;
 
   // True when the request whoes mode is |CORS| or |CORS-with-forced-preflight|
   // is sent to a ServiceWorker but FetchEvent.respondWith is not called. So the
   // renderer have to resend the request with skip service worker flag
   // considering the CORS preflight logic.
   bool was_fallback_required_by_service_worker;
 
-  // The original URL of the response which was fetched by the ServiceWorker.
-  // This may be empty if the response was created inside the ServiceWorker.
-  GURL original_url_via_service_worker;
+  // The URL list of the response which was served by the ServiceWorker. See
+  // ServiceWorkerResponseInfo::url_list_via_service_worker().
+  std::vector<GURL> url_list_via_service_worker;
 
   // The type of the response which was fetched by the ServiceWorker.
   blink::WebServiceWorkerResponseType response_type_via_service_worker;
 
   // The time immediately before starting ServiceWorker. If the response is not
   // provided by the ServiceWorker, kept empty.
   // TODO(ksakamoto): Move this to net::LoadTimingInfo.
   base::TimeTicks service_worker_start_time;
 
   // The time immediately before dispatching fetch event in ServiceWorker.
@@ skipping 42 matching lines @@
   net::SignedCertificateTimestampAndStatusList signed_certificate_timestamps;
 
   // In case this is a CORS response fetched by a ServiceWorker, this is the
   // set of headers that should be exposed.
   std::vector<std::string> cors_exposed_header_names;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_RESOURCE_RESPONSE_INFO_H_