Implement request id in PaymentDetailsInit

third_party/WebKit/Source/modules/payments/PaymentResponse.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 PaymentResponse_h
 #define PaymentResponse_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
@@ skipping 12 matching lines @@
 class ScriptState;
 
 class MODULES_EXPORT PaymentResponse final
     : public GarbageCollectedFinalized<PaymentResponse>,
       public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
   WTF_MAKE_NONCOPYABLE(PaymentResponse);
 
  public:
   PaymentResponse(payments::mojom::blink::PaymentResponsePtr,
-                  PaymentCompleter*);
+                  PaymentCompleter*,
+                  const String& requestId = "");

[please use gerrit instead, 2017/03/27 21:16:05]

= "" would only be used in tests. I prefer to avoid test-only code in
production. Therefore, please make the |requestId| parameter required.

   virtual ~PaymentResponse();
 
   ScriptValue toJSONForBinding(ScriptState*) const;
 
+  const String& requestId() const { return m_requestId; }
   const String& methodName() const { return m_methodName; }
   ScriptValue details(ScriptState*, ExceptionState&) const;
   PaymentAddress* shippingAddress() const { return m_shippingAddress.get(); }
   const String& shippingOption() const { return m_shippingOption; }
   const String& payerName() const { return m_payerName; }
   const String& payerEmail() const { return m_payerEmail; }
   const String& payerPhone() const { return m_payerPhone; }
 
   ScriptPromise complete(ScriptState*, const String& result = "");
 
   DECLARE_TRACE();
 
  private:
+  String m_requestId;
   String m_methodName;
   String m_stringifiedDetails;
   Member<PaymentAddress> m_shippingAddress;
   String m_shippingOption;
   String m_payerName;
   String m_payerEmail;
   String m_payerPhone;
   Member<PaymentCompleter> m_paymentCompleter;
 };
 
 }  // namespace blink
 
 #endif  // PaymentResponse_h