[Payments] Implement openWindow for service worker based payment handler

content/browser/service_worker/service_worker_client_utils.h

Index: content/browser/service_worker/service_worker_client_utils.h
diff --git a/content/browser/service_worker/service_worker_client_utils.h b/content/browser/service_worker/service_worker_client_utils.h
index be46f6c13e78b3ce44d5ece4aac6f074d98e4f60..0d865723927d3173a0ac631263fc270aeeddfbbb 100644
--- a/content/browser/service_worker/service_worker_client_utils.h
+++ b/content/browser/service_worker/service_worker_client_utils.h
@@ -37,9 +37,11 @@ using ClientsCallback = base::Callback<void(ServiceWorkerClients* clients)>;
 void FocusWindowClient(ServiceWorkerProviderHost* provider_host,
                        const ClientCallback& callback);
 
-// Opens a new window and navigates it to |url|. |callback| is called with the
+// Opens a new window and navigates it to |url_to_open|. |redirect_url| is the
+// last navigation occured before |url_to_open|. |callback| is called with the
 // window's client information on completion.
-void OpenWindow(const GURL& url,
+void OpenWindow(const GURL& redirect_url,
+                const GURL& url_to_open,
                 const GURL& script_url,
                 int worker_process_id,
                 const base::WeakPtr<ServiceWorkerContextCore>& context,