[Payments] Record CanMakePayment metrics on Desktop.

components/payments/core/payment_request_delegate.h

Index: components/payments/core/payment_request_delegate.h
diff --git a/components/payments/core/payment_request_delegate.h b/components/payments/core/payment_request_delegate.h
index 49047f8a1d8ffe5dda2c14c49bad9a4a98ce6c1b..f85997984765f75ebc3adc4069e8ccef35dcfe39 100644
--- a/components/payments/core/payment_request_delegate.h
+++ b/components/payments/core/payment_request_delegate.h
@@ -19,6 +19,10 @@ class PersonalDataManager;
 class RegionDataLoader;
 }  // namespace autofill
 
+namespace ukm {
+class UkmService;
+}  // namespace ukm
+
 namespace payments {
 
 class AddressNormalizer;
@@ -67,6 +71,9 @@ class PaymentRequestDelegate {
 
   // Creates a new region data loader that will self delete, or a test mock.
   virtual autofill::RegionDataLoader* GetRegionDataLoader() = 0;
+
+  // Returns a pointer to the UKM service.
+  virtual ukm::UkmService* GetUkmService() = 0;
 };
 
 }  // namespace payments