Add canMakeActivePayment() method to web payments.

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

Index: third_party/WebKit/Source/modules/payments/PaymentRequest.h
diff --git a/third_party/WebKit/Source/modules/payments/PaymentRequest.h b/third_party/WebKit/Source/modules/payments/PaymentRequest.h
index 3c8aedd563e45f809f90c407e3d92bb98c6e0258..b6eac105c22fe0bbdb9be4086e17228c41f744d3 100644
--- a/third_party/WebKit/Source/modules/payments/PaymentRequest.h
+++ b/third_party/WebKit/Source/modules/payments/PaymentRequest.h
@@ -74,6 +74,8 @@ class MODULES_EXPORT PaymentRequest final
   DEFINE_ATTRIBUTE_EVENT_LISTENER(shippingaddresschange);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(shippingoptionchange);
 
+  ScriptPromise canMakeActivePayment(ScriptState*);
+
   // ScriptWrappable:
   bool hasPendingActivity() const override;
 
@@ -109,6 +111,7 @@ class MODULES_EXPORT PaymentRequest final
   void OnError(mojom::blink::PaymentErrorReason) override;
   void OnComplete() override;
   void OnAbort(bool abortedSuccessfully) override;
+  void OnCanMakeActivePayment(mojom::blink::ActivePaymentQueryResult) override;
 
   void onCompleteTimeout(TimerBase*);
 
@@ -122,6 +125,7 @@ class MODULES_EXPORT PaymentRequest final
   Member<ScriptPromiseResolver> m_showResolver;
   Member<ScriptPromiseResolver> m_completeResolver;
   Member<ScriptPromiseResolver> m_abortResolver;
+  Member<ScriptPromiseResolver> m_canMakeActivePaymentResolver;
   mojom::blink::PaymentRequestPtr m_paymentProvider;
   mojo::Binding<mojom::blink::PaymentRequestClient> m_clientBinding;
   Timer<PaymentRequest> m_completeTimer;