Also ignore OEM apps for first time user determination

chrome/browser/ui/app_list/app_list_syncable_service.cc

Index: chrome/browser/ui/app_list/app_list_syncable_service.cc
diff --git a/chrome/browser/ui/app_list/app_list_syncable_service.cc b/chrome/browser/ui/app_list/app_list_syncable_service.cc
index 289340a95250cf4c575b719332407c2bbc896cd3..c19585fdccb512e3cb80139c793f7c29fee9d0a2 100644
--- a/chrome/browser/ui/app_list/app_list_syncable_service.cc
+++ b/chrome/browser/ui/app_list/app_list_syncable_service.cc
@@ -555,6 +555,7 @@ syncer::SyncMergeResult AppListSyncableService::MergeDataAndStartSyncing(
       ++updated_items;
     if (specifics.item_type() != sync_pb::AppListSpecifics::TYPE_FOLDER &&
         !IsUnRemovableDefaultApp(item_id) &&
+        !AppIsOem(item_id) &&
         !AppIsDefault(extension_system_->extension_service(), item_id)) {
       VLOG(2) << "Syncing non-default item: " << item_id;
       first_app_list_sync_ = false;