Make ExtensionInstallPrompt::Prompt ref-counted

chrome/browser/apps/ephemeral_app_launcher.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_EPHEMERAL_APP_LAUNCHER_H_
 #define CHROME_BROWSER_APPS_EPHEMERAL_APP_LAUNCHER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 55 matching lines @@
 
   void StartObserving();
   void LaunchApp(const extensions::Extension* extension) const;
 
   // 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;
   virtual bool CheckInstallValid(
       const base::DictionaryValue& manifest,
       std::string* error) OVERRIDE;
   virtual scoped_ptr<ExtensionInstallPrompt> CreateInstallUI() OVERRIDE;
@@ skipping 23 matching lines @@
 
   // Created in CheckInstallValid().
   scoped_refptr<extensions::Extension> extension_;
 
   scoped_ptr<ExtensionEnableFlow> extension_enable_flow_;
 
   DISALLOW_COPY_AND_ASSIGN(EphemeralAppLauncher);
 };
 
 #endif  // CHROME_BROWSER_APPS_EPHEMERAL_APP_LAUNCHER_H_