[Payments] Cache payment manifests.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index ae72f49f6e45a0fb751eb180b1fae3d4aaf3655e..b1686ab8d8ae9b83ee73078bc5c4b75f5787ba26 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -3115,6 +3115,8 @@ split_static_library("browser") {
       "payments/android/chrome_payments_jni_registrar.h",
       "payments/android/journey_logger_android.cc",
       "payments/android/journey_logger_android.h",
+      "payments/android/payment_manifest_web_data_service_android.cc",
+      "payments/android/payment_manifest_web_data_service_android.h",
       "payments/android/ssl_validity_checker_android.cc",
       "payments/android/ssl_validity_checker_android.h",
       "permissions/grouped_permission_infobar_delegate_android.cc",
@@ -4185,6 +4187,7 @@ if (is_android) {
       "../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/PaymentManifestWebDataService.java",
       "../android/java/src/org/chromium/chrome/browser/payments/ServiceWorkerPaymentAppBridge.java",
       "../android/java/src/org/chromium/chrome/browser/payments/SslValidityChecker.java",
       "../android/java/src/org/chromium/chrome/browser/permissions/PermissionDialogController.java",