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

content/browser/payments/payment_app_provider_impl.h

Index: content/browser/payments/payment_app_provider_impl.h
diff --git a/content/browser/payments/payment_app_provider_impl.h b/content/browser/payments/payment_app_provider_impl.h
index 83223aa49d8dcdf8bff7de72c8fbd87524b59546..b5d41ebb42a3dbe5a7a2bf7bf64699f28ea95694 100644
--- a/content/browser/payments/payment_app_provider_impl.h
+++ b/content/browser/payments/payment_app_provider_impl.h
@@ -25,10 +25,10 @@ class CONTENT_EXPORT PaymentAppProviderImpl : public PaymentAppProvider {
   // Should be accessed only on the UI thread.
   void GetAllManifests(BrowserContext* browser_context,
                        const GetAllManifestsCallback& callback) override;
-  void InvokePaymentApp(
-      BrowserContext* browser_context,
-      int64_t registration_id,
-      payments::mojom::PaymentAppRequestPtr app_request) override;
+  void InvokePaymentApp(BrowserContext* browser_context,
+                        int64_t registration_id,
+                        payments::mojom::PaymentAppRequestPtr app_request,
+                        const InvokePaymentAppCallback& callback) override;
 
  private:
   PaymentAppProviderImpl();