[Payments] Record CanMakePayment metrics on Desktop.

components/payments/core/test_payment_request_delegate.h

Index: components/payments/core/test_payment_request_delegate.h
diff --git a/components/payments/core/test_payment_request_delegate.h b/components/payments/core/test_payment_request_delegate.h
index 94f1744350ff48bbf7454120d0fe2f9c56e4a88a..eb8156535ae23c6849abb09e8c805cfa9cbcd13a 100644
--- a/components/payments/core/test_payment_request_delegate.h
+++ b/components/payments/core/test_payment_request_delegate.h
@@ -31,6 +31,7 @@ class TestPaymentRequestDelegate : public PaymentRequestDelegate {
           result_delegate) override;
   AddressNormalizer* GetAddressNormalizer() override;
   autofill::RegionDataLoader* GetRegionDataLoader() override;
+  ukm::UkmService* GetUkmService() override;
 
   TestAddressNormalizer* test_address_normalizer();
   void DelayFullCardRequestCompletion();
@@ -42,11 +43,10 @@ class TestPaymentRequestDelegate : public PaymentRequestDelegate {
   const GURL last_committed_url_;
   TestAddressNormalizer address_normalizer_;
 
+  bool instantaneous_full_card_request_result_ = true;
   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);
 };