[Payments] Record SelectedPaymentMethod metric on Desktop.

chrome/browser/ui/views/payments/payment_request_journey_logger_browsertest.cc

+// 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.
+
+#include "base/macros.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/test/histogram_tester.h"
+#include "chrome/browser/ui/views/payments/payment_request_browsertest_base.h"
+#include "components/autofill/core/browser/autofill_profile.h"
+#include "components/autofill/core/browser/autofill_test_utils.h"
+#include "components/autofill/core/browser/credit_card.h"
+#include "components/payments/core/journey_logger.h"
+
+namespace payments {
+
+class PaymentRequestJourneyLoggerSelectedPaymentInstrumentTest
+    : public PaymentRequestBrowserTestBase {
+ protected:
+  PaymentRequestJourneyLoggerSelectedPaymentInstrumentTest()
+      : PaymentRequestBrowserTestBase(
+            "/payment_request_no_shipping_test.html") {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(
+      PaymentRequestJourneyLoggerSelectedPaymentInstrumentTest);
+};
+
+// Tests that the SelectedPaymentInstrument metrics is correctly logged when the
+// Payment Request is completed with a credit card.
+IN_PROC_BROWSER_TEST_F(PaymentRequestJourneyLoggerSelectedPaymentInstrumentTest,
+                       TestSelectedPaymentMethod) {
+  base::HistogramTester histogram_tester;
+
+  // Setup a credit card with an associated billing address.
+  autofill::AutofillProfile billing_address = autofill::test::GetFullProfile();
+  AddAutofillProfile(billing_address);
+  autofill::CreditCard card = autofill::test::GetCreditCard();
+  card.set_billing_address_id(billing_address.guid());
+  AddCreditCard(card);  // Visa.
+
+  // Complete the Payment Request.
+  InvokePaymentRequestUI();
+  ResetEventObserver(DialogEvent::DIALOG_CLOSED);
+  PayWithCreditCardAndWait(base::ASCIIToUTF16("123"));
+
+  // Expect a credit card as the selected payment instrument in the metrics.
+  histogram_tester.ExpectBucketCount(
+      "PaymentRequest.SelectedPaymentMethod",
+      JourneyLogger::SELECTED_PAYMENT_METHOD_CREDIT_CARD, 1);
+}
+
+}  // namespace payments