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

third_party/WebKit/Source/modules/payments/PaymentRequestEvent.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PaymentRequestEvent_h
 #define PaymentRequestEvent_h
 
 #include "modules/EventModules.h"
 #include "modules/payments/PaymentAppRequest.h"
 #include "modules/serviceworkers/ExtendableEvent.h"
 #include "platform/heap/Handle.h"
 
 namespace WTF {
 class AtomicString;
 }
 
 namespace blink {
 
+class RespondWithObserver;
+
 class MODULES_EXPORT PaymentRequestEvent final : public ExtendableEvent {
   DEFINE_WRAPPERTYPEINFO();
   WTF_MAKE_NONCOPYABLE(PaymentRequestEvent);
 
  public:
   static PaymentRequestEvent* create(const AtomicString& type,
                                      const PaymentAppRequest&,
+                                     RespondWithObserver*,
                                      WaitUntilObserver*);
   ~PaymentRequestEvent() override;
 
   const AtomicString& interfaceName() const override;
 
   void appRequest(PaymentAppRequest&) const;
-  void respondWith(ScriptPromise);
+  void respondWith(ScriptState*, ScriptPromise, ExceptionState&);
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   PaymentRequestEvent(const AtomicString& type,
                       const PaymentAppRequest&,
+                      RespondWithObserver*,
                       WaitUntilObserver*);
   PaymentAppRequest m_appRequest;
+  Member<RespondWithObserver> m_observer;
 };
 
 }  // namespace blink
 
 #endif  // PaymentRequestEvent_h