PaymentHandler: Initial implementation for PaymentInstruments.

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

Index: third_party/WebKit/Source/modules/payments/PaymentInstruments.h
diff --git a/third_party/WebKit/Source/modules/payments/PaymentInstruments.h b/third_party/WebKit/Source/modules/payments/PaymentInstruments.h
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+++ b/third_party/WebKit/Source/modules/payments/PaymentInstruments.h
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+// 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 PaymentInstruments_h
+#define PaymentInstruments_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/ModulesExport.h"
+#include "platform/heap/Handle.h"
+#include "platform/wtf/Noncopyable.h"
+#include "platform/wtf/text/WTFString.h"
+
+namespace blink {
+
+class PaymentInstrument;
+class ScriptPromise;
+
+class MODULES_EXPORT PaymentInstruments final
+    : public GarbageCollected<PaymentInstruments>,
+      public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+  WTF_MAKE_NONCOPYABLE(PaymentInstruments);
+
+ public:
+  PaymentInstruments();
+
+  ScriptPromise deleteInstrument(const String& instrumentKey);
+  ScriptPromise get(const String& instrumentKey);
+  ScriptPromise keys();
+  ScriptPromise has(const String& instrumentKey);
+  ScriptPromise set(const String& instrumentKey,
+                    const PaymentInstrument& details);
+
+  DECLARE_TRACE();
+};
+
+}  // namespace blink
+
+#endif  // PaymentInstruments_h