mash: Update shelf pin prefs in ShelfModelObserver overrides.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h

 // Copyright 2013 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_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_IMPL_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_IMPL_H_
 
 #include <list>
 #include <memory>
 
@@ skipping 282 matching lines @@
   std::unique_ptr<BrowserStatusMonitor> browser_status_monitor_;
 
   // A special observer class to detect user switches.
   std::unique_ptr<ChromeLauncherControllerUserSwitchObserver>
       user_switch_observer_;
 
   std::unique_ptr<ash::launcher::ChromeLauncherPrefsObserver> prefs_observer_;
 
   std::unique_ptr<ArcAppDeferredLauncherController> arc_deferred_launcher_;
 
-  // If true, incoming pinned state changes should be ignored.
-  bool ignore_persist_pinned_state_change_ = false;
-
   // The list of running & un-pinned applications for different users on hidden
   // desktops.
   typedef std::vector<std::string> RunningAppListIds;
   typedef std::map<std::string, RunningAppListIds> RunningAppListIdMap;
   RunningAppListIdMap last_used_running_application_order_;
 
   base::WeakPtrFactory<ChromeLauncherControllerImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLauncherControllerImpl);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_IMPL_H_