[Payments] Record CanMakePayment metrics on Desktop.

components/payments/content/payment_request.h

Index: components/payments/content/payment_request.h
diff --git a/components/payments/content/payment_request.h b/components/payments/content/payment_request.h
index 9d0ff09c0141bc370f93e4257113535d841ee5c1..c831cb916e8f89f96dfae69fddd7527ca1e4966f 100644
--- a/components/payments/content/payment_request.h
+++ b/components/payments/content/payment_request.h
@@ -11,6 +11,7 @@
 #include "base/macros.h"
 #include "components/payments/content/payment_request_spec.h"
 #include "components/payments/content/payment_request_state.h"
+#include "components/payments/core/journey_logger.h"
 #include "components/payments/core/payment_request_delegate.h"
 #include "components/payments/mojom/payment_request.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
@@ -102,6 +103,8 @@ class PaymentRequest : public mojom::PaymentRequest,
   // May be null, must outlive this object.
   ObserverForTest* observer_for_testing_;
 
+  JourneyLogger journey_logger_;
+
   DISALLOW_COPY_AND_ASSIGN(PaymentRequest);
 };