[Payments] Make AutofillPaymentInstrumentTest use test objects

components/payments/core/test_payment_request_delegate.h

 // 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 COMPONENTS_PAYMENTS_CORE_TEST_PAYMENT_REQUEST_DELEGATE_H_
 #define COMPONENTS_PAYMENTS_CORE_TEST_PAYMENT_REQUEST_DELEGATE_H_
 
 #include "components/payments/core/payment_request_delegate.h"
 #include "components/payments/core/test_address_normalizer.h"
 
@@ skipping 14 matching lines @@
   bool IsIncognito() const override;
   bool IsSslCertificateValid() override;
   const GURL& GetLastCommittedURL() const override;
   void DoFullCardRequest(
       const autofill::CreditCard& credit_card,
       base::WeakPtr<autofill::payments::FullCardRequest::ResultDelegate>
           result_delegate) override;
   AddressNormalizer* GetAddressNormalizer() override;
   autofill::RegionDataLoader* GetRegionDataLoader() override;
 
-  TestAddressNormalizer* GetTestAddressNormalizer();
+  TestAddressNormalizer* test_address_normalizer();
+  void DelayFullCardRequestCompletion();
+  void CompleteFullCardRequest();
 
  private:
   autofill::PersonalDataManager* personal_data_manager_;
   std::string locale_;
   const GURL last_committed_url_;
   TestAddressNormalizer address_normalizer_;
 
   autofill::CreditCard full_card_request_card_;
   base::WeakPtr<autofill::payments::FullCardRequest::ResultDelegate>
       full_card_result_delegate_;
+
+  bool instantaneous_full_card_request_result_ = true;
   DISALLOW_COPY_AND_ASSIGN(TestPaymentRequestDelegate);
 };
 
 }  // namespace payments
 
 #endif  // COMPONENTS_PAYMENTS_CORE_TEST_PAYMENT_REQUEST_DELEGATE_H_