Add a specialized apps::NativeAppWindow for app_shell

apps/shell/browser/shell_extension_system.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 APPS_SHELL_BROWSER_SHELL_EXTENSION_SYSTEM_H_
 #define APPS_SHELL_BROWSER_SHELL_EXTENSION_SYSTEM_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 25 matching lines @@
   explicit ShellExtensionSystem(content::BrowserContext* browser_context);
   virtual ~ShellExtensionSystem();
 
   // Returns the list of services on which |this| depends.
   static std::vector<BrowserContextKeyedServiceFactory*> GetDependencies();
 
   // Loads an unpacked application from a directory and attempts to launch it.
   // Returns true on success.
   bool LoadAndLaunchApp(const base::FilePath& app_dir);
 
+  // Closes the running app.
+  void CloseApp();
+
   // BrowserContextKeyedService implementation:
   virtual void Shutdown() OVERRIDE;
 
   // ExtensionSystem implementation:
   virtual void InitForRegularProfile(bool extensions_enabled) OVERRIDE;
   virtual ExtensionService* extension_service() OVERRIDE;
   virtual RuntimeData* runtime_data() OVERRIDE;
   virtual ManagementPolicy* management_policy() OVERRIDE;
   virtual UserScriptMaster* user_script_master() OVERRIDE;
   virtual ProcessManager* process_manager() OVERRIDE;
@@ skipping 11 matching lines @@
   virtual void RegisterExtensionWithRequestContexts(
       const Extension* extension) OVERRIDE;
   virtual void UnregisterExtensionWithRequestContexts(
       const std::string& extension_id,
       const UnloadedExtensionInfo::Reason reason) OVERRIDE;
   virtual const OneShotEvent& ready() const OVERRIDE;
 
  private:
   content::BrowserContext* browser_context_;  // Not owned.
 
+  // Extension ID for the app.
+  std::string app_id_;
+
   // Data to be accessed on the IO thread. Must outlive process_manager_.
   scoped_refptr<InfoMap> info_map_;
 
   scoped_ptr<RuntimeData> runtime_data_;
   scoped_ptr<LazyBackgroundTaskQueue> lazy_background_task_queue_;
   scoped_ptr<EventRouter> event_router_;
   scoped_ptr<ProcessManager> process_manager_;
   scoped_ptr<QuotaService> quota_service_;
 
   // Signaled when the extension system has completed its startup tasks.
   OneShotEvent ready_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellExtensionSystem);
 };
 
 }  // namespace extensions
 
 #endif  // APPS_SHELL_BROWSER_SHELL_EXTENSION_SYSTEM_H_