[Payments] Add PaymentRequest checkout funnel UKMs.

chrome/android/java_sources.gni

 # Copyright 2016 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.
 
 chrome_java_sources = [
   "java/src/com/google/android/apps/chrome/appwidget/bookmarks/BookmarkThumbnailWidgetProvider.java",
   "java/src/org/chromium/chrome/browser/ActivityTabTaskDescriptionHelper.java",
   "java/src/org/chromium/chrome/browser/ActivityTaskDescriptionIconGenerator.java",
   "java/src/org/chromium/chrome/browser/AfterStartupTaskUtils.java",
   "java/src/org/chromium/chrome/browser/AppIndexingUtil.java",
@@ skipping 707 matching lines @@
   "java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFactory.java",
   "java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFinder.java",
   "java/src/org/chromium/chrome/browser/payments/AndroidPaymentApp.java",
   "java/src/org/chromium/chrome/browser/payments/AutofillAddress.java",
   "java/src/org/chromium/chrome/browser/payments/AutofillContact.java",
   "java/src/org/chromium/chrome/browser/payments/AutofillPaymentApp.java",
   "java/src/org/chromium/chrome/browser/payments/AutofillPaymentInstrument.java",
   "java/src/org/chromium/chrome/browser/payments/CardEditor.java",
   "java/src/org/chromium/chrome/browser/payments/ContactEditor.java",
   "java/src/org/chromium/chrome/browser/payments/EditorBase.java",
+  "java/src/org/chromium/chrome/browser/payments/JourneyLogger.java",
   "java/src/org/chromium/chrome/browser/payments/PackageManagerDelegate.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentApp.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentAppFactory.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentInstrument.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentManifestVerifier.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentPreferencesUtil.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentRequestFactory.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentRequestMetrics.java",
   "java/src/org/chromium/chrome/browser/payments/PaymentResponseHelper.java",
@@ skipping 958 matching lines @@
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/SyncTestBase.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/TypedUrlsTest.java",
   "sync_shell/javatests/src/org/chromium/chrome/browser/sync/ui/PassphraseTypeDialogFragmentTest.java",
 ]
 
 # Only used for testing, should not be shipped to end users.
 if (!is_official_build) {
   chrome_java_sources += [ "java/src/org/chromium/chrome/browser/offlinepages/evaluation/OfflinePageEvaluationBridge.java" ]
   chrome_test_java_sources += [ "javatests/src/org/chromium/chrome/browser/offlinepages/OfflinePageSavePageLaterEvaluationTest.java" ]
 }