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

net/http/http_response_info.h

Index: net/http/http_response_info.h
diff --git a/net/http/http_response_info.h b/net/http/http_response_info.h
index efd76fe7b517e98d9fcca9242a51a4f792d758a4..917cc1406d22e6cd8e9ce516abecbdd15b4eeaa6 100644
--- a/net/http/http_response_info.h
+++ b/net/http/http_response_info.h
@@ -13,6 +13,7 @@
 #include "net/http/http_vary_data.h"
 #include "net/socket/next_proto.h"
 #include "net/ssl/ssl_info.h"
+#include "url/gurl.h"
 
 class Pickle;
 
@@ -93,6 +94,12 @@ class NET_EXPORT HttpResponseInfo {
   // Whether the request use http proxy or server authentication.
   bool did_use_http_auth;
 
+  // True if the request was fetched via a ServiceWorker.
+  bool was_fetched_via_service_worker;
+  // The original URL of the repsponse which was fetched via the ServiceWorker.
+  // This may be empty if the repsponse was created inside the ServiceWorker.
+  GURL original_url_via_service_worker;
+
   // Remote address of the socket which fetched this resource.
   //
   // NOTE: If the response was served from the cache (was_cached is true),