Implement PaymentRequestUpdateEvent

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

Index: third_party/WebKit/Source/modules/payments/PaymentUpdater.h
diff --git a/third_party/WebKit/Source/modules/payments/PaymentUpdater.h b/third_party/WebKit/Source/modules/payments/PaymentUpdater.h
new file mode 100644
index 0000000000000000000000000000000000000000..9ed823b80a2c3bb3b0312197ef9232d5f4db1820
--- /dev/null
+++ b/third_party/WebKit/Source/modules/payments/PaymentUpdater.h
@@ -0,0 +1,26 @@
+// 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 PaymentUpdater_h
+#define PaymentUpdater_h
+
+#include "modules/ModulesExport.h"
+#include "platform/heap/GarbageCollected.h"
+
+namespace blink {
+
+class ScriptPromise;
+
+class MODULES_EXPORT PaymentUpdater : public GarbageCollectedMixin {
+public:
+    virtual void onUpdatePaymentDetails(const ScriptValue& detailsScriptValue) = 0;
+    virtual void onUpdatePaymentDetailsFailure(const ScriptValue& error) = 0;
+
+protected:
+    virtual ~PaymentUpdater() {}
+};
+
+} // namespace blink
+
+#endif // PaymentUpdater_h