PaymentApp: Blink side of payment request event dispatching in service worker.

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

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 172 matching lines @@
                                   WebServiceWorkerEventResult result,
                                   double eventDispatchTime) {}
 
   // ServiceWorker specific method. Called after SyncEvent (dispatched via
   // WebServiceWorkerContextProxy) is handled by the ServiceWorker's script
   // context.
   virtual void didHandleSyncEvent(int syncEventID,
                                   WebServiceWorkerEventResult result,
                                   double eventDispatchTime) {}
 
+  // ServiceWorker specific method. Called after PaymentRequestEvent (dispatched
+  // via WebServiceWorkerContextProxy) is handled by the ServiceWorker's script
+  // context.
+  virtual void didHandlePaymentRequestEvent(int paymentRequestEventID,
+                                            WebServiceWorkerEventResult result,
+                                            double eventDispatchTime) {}
+
   // Ownership of the returned object is transferred to the caller.
   // This is called on the main thread.
   virtual WebServiceWorkerNetworkProvider* createServiceWorkerNetworkProvider(
       WebDataSource*) {
     return nullptr;
   }
 
   // Ownership of the returned object is transferred to the caller.
   // This is called on the main thread.
   virtual WebServiceWorkerProvider* createServiceWorkerProvider() {
@@ skipping 69 matching lines @@
   // Called when the worker wants to register subscopes to handle via foreign
   // fetch. Will only be called while an install event is in progress.
   virtual void registerForeignFetchScopes(
       const WebVector<WebURL>& subScopes,
       const WebVector<WebSecurityOrigin>& origins) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebServiceWorkerContextClient_h