Make ExtensionInstallPrompt::Prompt ref-counted

chrome/browser/chromeos/file_manager/app_installer.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_CHROMEOS_FILE_MANAGER_APP_INSTALLER_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_APP_INSTALLER_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 24 matching lines @@
   virtual ~AppInstaller();
 
   void OnWebContentsDestroyed(content::WebContents* web_contents);
 
   // WebstoreStandaloneInstaller implementation.
   virtual bool CheckRequestorAlive() const OVERRIDE;
   virtual const GURL& GetRequestorURL() const OVERRIDE;
   virtual bool ShouldShowPostInstallUI() const OVERRIDE;
   virtual bool ShouldShowAppInstalledBubble() const OVERRIDE;
   virtual content::WebContents* GetWebContents() const OVERRIDE;
-  virtual scoped_ptr<ExtensionInstallPrompt::Prompt>
-      CreateInstallPrompt() const OVERRIDE;
+  virtual scoped_refptr<ExtensionInstallPrompt::Prompt> CreateInstallPrompt()
+      const OVERRIDE;
   virtual bool CheckInlineInstallPermitted(
       const base::DictionaryValue& webstore_data,
       std::string* error) const OVERRIDE;
   virtual bool CheckRequestorPermitted(
       const base::DictionaryValue& webstore_data,
       std::string* error) const OVERRIDE;
 
  private:
   class WebContentsObserver;
 
   Callback callback_;
   content::WebContents* web_contents_;
   scoped_ptr<WebContentsObserver> web_contents_observer_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AppInstaller);
 };
 
 }  // namespace file_manager
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_MANAGER_APP_INSTALLER_H_