[VersionUpdater] Allow clients to read update_engine features

+ expose a method to make it easy to check if managed auto updates are
  enabled/disabled.

BUG=1278079

Change-Id: Id9bda4b7312651e43ff4f11238a44e1e3175544c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3591042
Reviewed-by: Kyle Horimoto <[email protected]>
Commit-Queue: Jae Hoon Kim <[email protected]>
Cr-Commit-Position: refs/heads/main@{#993520}
diff --git a/chrome/browser/ui/webui/help/test_version_updater.cc b/chrome/browser/ui/webui/help/test_version_updater.cc
index 4321268..41d2511 100644
--- a/chrome/browser/ui/webui/help/test_version_updater.cc
+++ b/chrome/browser/ui/webui/help/test_version_updater.cc
@@ -13,3 +13,9 @@
   callback.Run(status_, progress_, rollback_, powerwash_, version_,
                update_size_, message_);
 }
+
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+bool TestVersionUpdater::IsManagedAutoUpdateEnabled() {
+  return true;
+}
+#endif