arc: Dont sync app list change caused by Arc opt out.

chrome/browser/ui/app_list/app_list_model_builder.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_APP_LIST_MODEL_BUILDER_H_
 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_MODEL_BUILDER_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 31 matching lines @@
 
   Profile* profile() { return profile_; }
 
   AppListControllerDelegate* controller() { return controller_; }
 
   app_list::AppListModel* model() { return model_; }
 
   // Inserts an app based on app ordinal prefs.
   void InsertApp(std::unique_ptr<app_list::AppListItem> app);
 
   // Removes an app based on app id.

[stevenjb, 2016/08/31 21:10:49]

We need to document |local_change| here.

[khmel, 2016/09/01 00:03:02]

Done.

-  void RemoveApp(const std::string& id);
+  void RemoveApp(const std::string& id, bool local_change);
 
   const app_list::AppListSyncableService::SyncItem* GetSyncItem(
       const std::string& id);
 
   // Returns app instance matching |id| or nullptr.
   app_list::AppListItem* GetAppItem(const std::string& id);
 
  private:
   // Unowned pointers to the service that owns this and associated profile.
   app_list::AppListSyncableService* service_ = nullptr;
   Profile* profile_ = nullptr;
 
   // Unowned pointer to the app list model.
   app_list::AppListModel* model_ = nullptr;
 
   // Unowned pointer to the app list controller.
   AppListControllerDelegate* controller_;
 
   // Global constant defined for each item type.
   const char* item_type_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListModelBuilder);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_MODEL_BUILDER_H_