[Merge-M54] arc: Don't sync app list change caused by Arc opt out.

chrome/browser/ui/app_list/app_list_model_builder.h

Index: chrome/browser/ui/app_list/app_list_model_builder.h
diff --git a/chrome/browser/ui/app_list/app_list_model_builder.h b/chrome/browser/ui/app_list/app_list_model_builder.h
index 5b74ae63f8da21e29954886b239e708e99b141bd..a2846f5f6ad0bedd0c798c4b2b0516f17fe81b0b 100644
--- a/chrome/browser/ui/app_list/app_list_model_builder.h
+++ b/chrome/browser/ui/app_list/app_list_model_builder.h
@@ -49,8 +49,9 @@ class AppListModelBuilder : public app_list::AppListItemListObserver {
   // Inserts an app based on app ordinal prefs.
   void InsertApp(std::unique_ptr<app_list::AppListItem> app);
 
-  // Removes an app based on app id.
-  void RemoveApp(const std::string& id);
+  // Removes an app based on app id. If |unsynced_change| is set to true then
+  // app is removed only from model and sync service is not used.
+  void RemoveApp(const std::string& id, bool unsynced_change);
 
   const app_list::AppListSyncableService::SyncItem* GetSyncItem(
       const std::string& id);