Move Chrome terminating notification out of //apps

chrome/browser/apps/app_shim/extension_app_shim_handler_mac.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_APPS_APP_SHIM_EXTENSION_APP_SHIM_HANDLER_MAC_H_
 #define CHROME_BROWSER_APPS_APP_SHIM_EXTENSION_APP_SHIM_HANDLER_MAC_H_
 
 #include <map>
 #include <memory>
 #include <set>
@@ skipping 111 matching lines @@
                    AppShimFocusType focus_type,
                    const std::vector<base::FilePath>& files) override;
   void OnShimSetHidden(Host* host, bool hidden) override;
   void OnShimQuit(Host* host) override;
 
   // AppLifetimeMonitor::Observer overrides:
   void OnAppStart(Profile* profile, const std::string& app_id) override;
   void OnAppActivated(Profile* profile, const std::string& app_id) override;
   void OnAppDeactivated(Profile* profile, const std::string& app_id) override;
   void OnAppStop(Profile* profile, const std::string& app_id) override;
-  void OnChromeTerminating() override;
 
   // content::NotificationObserver overrides:
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // chrome::BrowserListObserver overrides;
   void OnBrowserAdded(Browser* browser) override;
   void OnBrowserRemoved(Browser* browser) override;
 
@@ skipping 46 matching lines @@
   content::NotificationRegistrar registrar_;
 
   base::WeakPtrFactory<ExtensionAppShimHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionAppShimHandler);
 };
 
 }  // namespace apps
 
 #endif  // CHROME_BROWSER_APPS_APP_SHIM_EXTENSION_APP_SHIM_HANDLER_MAC_H_