Introduce url_list to the Response scheme of CacheStorage.

content/public/common/resource_response_info.h

Index: content/public/common/resource_response_info.h
diff --git a/content/public/common/resource_response_info.h b/content/public/common/resource_response_info.h
index 3e8618c3c2b832f32dda1d77094b47ace1593601..55f9724c0590f8ddd1ac0d42466414093eea83b4 100644
--- a/content/public/common/resource_response_info.h
+++ b/content/public/common/resource_response_info.h
@@ -116,9 +116,10 @@ struct CONTENT_EXPORT ResourceResponseInfo {
   // 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. This
+  // is empty if the response was created inside the ServiceWorker or if the
+  // response was not served by a service worker

[falken, 2016/12/05 01:22:33]

Oops, can we just say "See
ServiceWorkerResponseInfo::url_list_via_service_worker()." as the second
sentence here, so the documentation doesn't need to be repeated everywhere? I
should have done this for this file in my comment patch.

[horo, 2016/12/05 03:39:49]

Done.

+  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;