[Payments] Add PaymentRequest checkout funnel UKMs.

components/payments/content/android/BUILD.gn

Index: components/payments/content/android/BUILD.gn
diff --git a/components/payments/content/android/BUILD.gn b/components/payments/content/android/BUILD.gn
index 1978d227aae3d5edb16d1914914e3bbc923a8f04..609224f148719c243fbc70f8484a4ffff1e98b2a 100644
--- a/components/payments/content/android/BUILD.gn
+++ b/components/payments/content/android/BUILD.gn
@@ -12,8 +12,6 @@ static_library("android") {
     "component_jni_registrar.h",
     "currency_formatter_android.cc",
     "currency_formatter_android.h",
-    "journey_logger_android.cc",
-    "journey_logger_android.h",
     "payment_details_validation_android.cc",
     "payment_details_validation_android.h",
     "payment_manifest_downloader_android.cc",
@@ -35,7 +33,6 @@ static_library("android") {
 generate_jni("jni_headers") {
   sources = [
     "java/src/org/chromium/components/payments/CurrencyFormatter.java",
-    "java/src/org/chromium/components/payments/JourneyLogger.java",
     "java/src/org/chromium/components/payments/PaymentManifestDownloader.java",
     "java/src/org/chromium/components/payments/PaymentManifestParser.java",
     "java/src/org/chromium/components/payments/PaymentValidator.java",
@@ -46,7 +43,6 @@ generate_jni("jni_headers") {
 android_library("java") {
   java_files = [
     "java/src/org/chromium/components/payments/CurrencyFormatter.java",
-    "java/src/org/chromium/components/payments/JourneyLogger.java",
     "java/src/org/chromium/components/payments/PaymentManifestDownloader.java",
     "java/src/org/chromium/components/payments/PaymentManifestParser.java",
     "java/src/org/chromium/components/payments/PaymentValidator.java",