[Payments] Cache payment manifests.

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 c11f428b301032ab6c6a10bf1f219f7f9838b76f..3778c5be49c8efeaca423adcf7d7994bd00d4581 100644
--- a/components/payments/content/android/BUILD.gn
+++ b/components/payments/content/android/BUILD.gn
@@ -16,17 +16,12 @@ static_library("android") {
     "origin_security_checker_android.h",
     "payment_details_validation_android.cc",
     "payment_details_validation_android.h",
-    "payment_manifest_downloader_android.cc",
-    "payment_manifest_downloader_android.h",
-    "payment_manifest_parser_android.cc",
-    "payment_manifest_parser_android.h",
   ]
   deps = [
     ":jni_headers",
     "//base",
     "//components/payments/content:utils",
     "//components/payments/core",
-    "//components/payments/mojom",
     "//content/public/browser",
     "//net",
   ]
@@ -36,8 +31,6 @@ generate_jni("jni_headers") {
   sources = [
     "java/src/org/chromium/components/payments/CurrencyFormatter.java",
     "java/src/org/chromium/components/payments/OriginSecurityChecker.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",
   ]
   jni_package = "payments"
@@ -47,14 +40,11 @@ android_library("java") {
   java_files = [
     "java/src/org/chromium/components/payments/CurrencyFormatter.java",
     "java/src/org/chromium/components/payments/OriginSecurityChecker.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",
   ]
   deps = [
     "//base:base_java",
     "//components/payments/mojom:mojom_java",
-    "//components/payments/mojom:mojom_parser_java",
     "//content/public/android:content_java",
     "//mojo/public/java:bindings_java",
   ]