[Payments] Implement openWindow for service worker based payment handler

content/browser/service_worker/service_worker_version.h

Index: content/browser/service_worker/service_worker_version.h
diff --git a/content/browser/service_worker/service_worker_version.h b/content/browser/service_worker/service_worker_version.h
index 917fe64bf6a7e3eb4836136bace13309dd57bb6c..be7a20773b902eaec4c53b6cca327aa21ee5305b 100644
--- a/content/browser/service_worker/service_worker_version.h
+++ b/content/browser/service_worker/service_worker_version.h
@@ -41,6 +41,7 @@
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 #include "services/service_manager/public/cpp/interface_provider.h"
 #include "third_party/WebKit/public/platform/modules/serviceworker/WebServiceWorkerEventResult.h"
+#include "ui/base/mojo/window_open_disposition.mojom.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 
@@ -584,7 +585,15 @@ class CONTENT_EXPORT ServiceWorkerVersion
   void OnGetClients(int request_id,
                     const ServiceWorkerClientQueryOptions& options);
 
-  void OnOpenWindow(int request_id, GURL url);
+  // Currently used for Clients.openWindow() only.
+  void OnOpenNewTab(int request_id, const GURL& url);
+
+  // Currently used for PaymentRequestEvent.openWindow() only.
+  void OnOpenNewPopup(int request_id, const GURL& url);
+
+  void OnOpenWindow(int request_id,
+                    GURL url,
+                    WindowOpenDisposition disposition);
   void OnOpenWindowFinished(int request_id,
                             ServiceWorkerStatusCode status,
                             const ServiceWorkerClientInfo& client_info);