Set OEM apps folder name from customization manifest

chrome/browser/ui/app_list/app_list_syncable_service.h

Index: chrome/browser/ui/app_list/app_list_syncable_service.h
diff --git a/chrome/browser/ui/app_list/app_list_syncable_service.h b/chrome/browser/ui/app_list/app_list_syncable_service.h
index 949b49f3b1d6c41f4961dcf1b83525638637ca5a..5c9993b80d734f01cca14b104a5624ca89c68dc3 100644
--- a/chrome/browser/ui/app_list/app_list_syncable_service.h
+++ b/chrome/browser/ui/app_list/app_list_syncable_service.h
@@ -79,7 +79,10 @@ class AppListSyncableService : public syncer::SyncableService,
 
   Profile* profile() { return profile_; }
   AppListModel* model() { return model_.get(); }
-  size_t GetNumSyncItemsForTest() { return sync_items_.size(); }
+  size_t GetNumSyncItemsForTest() const { return sync_items_.size(); }
+  const std::string& GetOemFolderNameForTest() const {
+    return oem_folder_name_;
+  }
 
   // syncer::SyncableService
   virtual syncer::SyncMergeResult MergeDataAndStartSyncing(