Add CrostiniUseDlc to IsFeatureEnabled call

vmc needs a way to tell where to look for the termina image.

Bug: 1128743
Change-Id: Iad8054ead04282f8a9861ddff71fa7528e6bba03
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622353
Commit-Queue: Fergus Dall <sidereal@google.com>
Auto-Submit: Fergus Dall <sidereal@google.com>
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842856}

chrome/browser/chromeos/dbus/chrome_features_service_provider.cc

@@ -141,6 +141,7 @@ void ChromeFeaturesServiceProvider::IsFeatureEnabled(
       &arc::kFilePickerExperimentFeature,
       &arc::kNativeBridgeToggleFeature,
       &features::kSessionManagerLongKillTimeout,
+      &features::kCrostiniUseDlc,
   };
 
   dbus::MessageReader reader(method_call);