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

chrome/browser/android/payments/service_worker_payment_app_bridge.cc

Index: chrome/browser/android/payments/service_worker_payment_app_bridge.cc
diff --git a/chrome/browser/android/payments/service_worker_payment_app_bridge.cc b/chrome/browser/android/payments/service_worker_payment_app_bridge.cc
index 3047a45f29b0619dcc3575206e2ec2344a1f6663..cf64e3b6fa35256d00c87a54670d3ee77489bca1 100644
--- a/chrome/browser/android/payments/service_worker_payment_app_bridge.cc
+++ b/chrome/browser/android/payments/service_worker_payment_app_bridge.cc
@@ -169,7 +169,8 @@ static void InvokePaymentApp(JNIEnv* env,
 
   content::PaymentAppProvider::GetInstance()->InvokePaymentApp(
       web_contents->GetBrowserContext(), registration_id,
-      std::move(app_request));
+      std::move(app_request),
+      content::PaymentAppProvider::InvokePaymentAppCallback());
 }
 
 bool RegisterServiceWorkerPaymentAppBridge(JNIEnv* env) {