PaymentApp: Implement respondWith() in PaymentRequestEvent. (blink side)

third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h

Index: third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
diff --git a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
index c272ec9b7a8e47f3f74d65140cc4ace853ae622b..d361c0a38cf618d99a6ce7d3c525bee3d04bca97 100644
--- a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
+++ b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
@@ -44,6 +44,7 @@
 
 namespace blink {
 
+struct WebPaymentAppResponse;
 struct WebServiceWorkerClientQueryOptions;
 class WebServiceWorkerContextProxy;
 class WebServiceWorkerNetworkProvider;
@@ -152,6 +153,10 @@ class WebServiceWorkerContextClient {
   virtual void respondToFetchEvent(int fetchEventID,
                                    const WebServiceWorkerResponse& response,
                                    double eventDispatchTime) {}
+  virtual void respondToPaymentRequestEvent(
+      int eventId,
+      const WebPaymentAppResponse& response,
+      double eventDispatchTime) {}
   virtual void didHandleFetchEvent(int fetchEventID,
                                    WebServiceWorkerEventResult result,
                                    double eventDispatchTime) {}