[Payments] Add PaymentRequest checkout funnel UKMs.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 91e464cc847bec4b94bb5f899c0e1fe7d87df0f7..3086393235141b21af76d6d503150c14f030f41f 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -3087,6 +3087,10 @@ split_static_library("browser") {
       "password_manager/save_password_infobar_delegate_android.h",
       "password_manager/update_password_infobar_delegate_android.cc",
       "password_manager/update_password_infobar_delegate_android.h",
+      "payments/android/chrome_payments_jni_registrar.cc",
+      "payments/android/chrome_payments_jni_registrar.h",
+      "payments/android/journey_logger_android.cc",
+      "payments/android/journey_logger_android.h",
       "permissions/grouped_permission_infobar_delegate_android.cc",
       "permissions/grouped_permission_infobar_delegate_android.h",
       "permissions/permission_dialog_delegate.cc",
@@ -4166,6 +4170,7 @@ if (is_android) {
       "../android/java/src/org/chromium/chrome/browser/password_manager/AccountChooserDialog.java",
       "../android/java/src/org/chromium/chrome/browser/password_manager/AutoSigninFirstRunDialog.java",
       "../android/java/src/org/chromium/chrome/browser/password_manager/Credential.java",
+      "../android/java/src/org/chromium/chrome/browser/payments/JourneyLogger.java",
       "../android/java/src/org/chromium/chrome/browser/payments/ServiceWorkerPaymentAppBridge.java",
       "../android/java/src/org/chromium/chrome/browser/permissions/PermissionDialogController.java",
       "../android/java/src/org/chromium/chrome/browser/permissions/PermissionDialogDelegate.java",