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

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

Index: third_party/WebKit/Source/modules/payments/PaymentRequestRespondWithObserver.h
diff --git a/third_party/WebKit/Source/modules/payments/PaymentRequestRespondWithObserver.h b/third_party/WebKit/Source/modules/payments/PaymentRequestRespondWithObserver.h
new file mode 100644
index 0000000000000000000000000000000000000000..f29d57df14c53efaaa651991d078936dc6355b74
--- /dev/null
+++ b/third_party/WebKit/Source/modules/payments/PaymentRequestRespondWithObserver.h
@@ -0,0 +1,43 @@
+// Copyright 2017 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 PaymentRequestRespondWithObserver_h
+#define PaymentRequestRespondWithObserver_h
+
+#include "modules/ModulesExport.h"
+#include "modules/serviceworkers/RespondWithObserver.h"
+#include "public/platform/modules/serviceworker/WebServiceWorkerResponseError.h"
+
+namespace blink {
+
+class ExecutionContext;
+class ScriptValue;
+class WaitUntilObserver;
+
+// This class observes the service worker's handling of a PaymentRequestEvent
+// and notifies the client.
+class MODULES_EXPORT PaymentRequestRespondWithObserver final
+    : public RespondWithObserver {
+ public:
+  virtual ~PaymentRequestRespondWithObserver();
+
+  static PaymentRequestRespondWithObserver* create(ExecutionContext*,
+                                                   int eventID,
+                                                   WaitUntilObserver*);
+
+  void onResponseRejected(WebServiceWorkerResponseError) override;
+  void onResponseFulfilled(const ScriptValue&) override;
+  void onNoResponse() override;
+
+  DECLARE_VIRTUAL_TRACE();
+
+ private:
+  PaymentRequestRespondWithObserver(ExecutionContext*,
+                                    int eventID,
+                                    WaitUntilObserver*);
+};
+
+}  // namespace blink
+
+#endif  // PaymentRequestRespondWithObserver_h